Important Formulae on Simple Interest

 ·  Principal:

The money borrowed or lent out for a certain period is called the principal or the sum.

·  Interest:

Extra money paid for using other's money is called interest.

·  Simple Interest (S.I.):

 If the interest on a sum borrowed for certain period is reckoned uniformly, then it is called simple interest.

Let Principal = P, Rate = R% per annum (p.a.) and Time = T years. Then

(i). Simple Intereest =	[	P x R x T	]
		100

(ii). P =

[

100 x S.I.

]

; R =

[

100 x S.I.

]

and T =

[

100 x S.I.

]

.

R x T

P x T

P x R

Problems on Ages

1)      Sachin is younger than Rahul by 4 years. If their ages are in the respective ratio of 7:9, how old is Sachin?

a)      16              b) 18                c) 28                d) Cannot be determined

e) None of these

2)      The ratio between the present ages of P and Q is 6:7. If Q is 4 years old than P, what will be the ratio of ages of P and Q after 4 years?

a)      3:4             b) 3:5               c) 4:3               d) data inadequate      e) None of these

3)      The ratio between the ages of A and B after 4 years will be 7:8. If A is 4 years younger than B, what is ratio of ages of A and B?

a)      7:8             b) 6:7               c) 3:4               d) Data Inadequate     e) None of These

4)      The ratio between the present ages of P and Q are in the ratio 5:7. If the difference between Q’s present age and P’s age after 6 years be 2, then what is the sum of their ages?

a)      48              b) 52                c) 56                d) Cannot be determined

e) None of these

5)      At present, the ration of ages of Arun and Deepak are in the ratio, 4:3. After 6 years, Arun will be 26 years old. What is the age of Deepak at present?

a)      12              b) 15                c) 19.5             d) 21                e) None of these

6)      Present ages of x and y are in the ratio 5:6 respectively. After 7 years their ages will be in the ratio 6:7. What is present age of x?

a)      35              b) 42                c) 49                d) Cannot be determined\

e) None of these

7)      Present ages of Sameer and Anand are in the ratio 5:4. If after 3 years, the ratio of their ages will be 11:9, then what is the age of Anand at present?

a)      24              b) 27                c) 40    d) Cannot be determined        e) None of these

8)      Six years ago, the ratio of ages of Anand and Sagar was 6:5. Four years hence, their ages will be in the ratio 11:10. What is the  age of Sagar at present?

a)      16              b) 18                c) 20                d) Cannot be determined

e) None of these

9)      The total ages of A, B and C is 93. Ten years ago, the ratio of their ages were in the ratio, 2:3:4. What will be the present age of C?

a)      24              b) 32                c) 34                d) 38                e) Cannot be determined

10)  The ratio of the present ages of two brothers is 1:2 and 5 years back, the ratio was 1:3. What will be the ratio of their ages after 5 years?

a)      1:4             b) 2:3               c) 3:5               d) 5:6               e) None of these

Answers ! ! ! 

SBI Clerical Recruitment 2009 - reasoning - a few questions

1. If it is possible to make only one meaningful word with the Third, Seventh, Eighth and Tenth letters of the word COMPATIBILITY, which of the following would be the last letter of that word ? If no such word can be made, give ‘X’ as your answer and if more than one such word can be formed, give your answer as ‘Y’.

(A) I

(B) B

(C) L

(D) X

(E) Y

2. Four of the following five are alike in a certain way and so form a group. Which is the one that does not belong to that group ?

(A) Stem

(B) Tree

(C) Root

(D) Branch

(E) Leaf

3. How many meaningful three letter English words can be formed with the letters AER, using each letter only once in each word ?

(A) None

(B) One

(C) Two

(D) Three

(E) Four

4. In a certain code FINE is written HGPC.

How is SLIT written in that code ?

(A) UTGR

(B) UTKR

(C) TUGR

(D) RUGT

(E) None of these

5. If ‘Apple’ is called ‘Orange’, ‘Orange’ is called ‘Peach’, ‘Peach’ is called ‘Potato’, ‘Potato’ is called ‘Banana’, ‘Banana’ is called ‘Papaya’ and ‘Papaya’ is called ‘Guava’, which of the following grows underground ?

(A) Potato

(B) Guava

(C) Apple

(D) Banana

(E) None of these

6. If the digits in the number 86435192 are arranged in ascending order, what will be the difference between the digits which are second from the right and fourth from the left in the new arrangement ?

(A) One

(B) Two

(C) Three

(D) Four

(E) None

7. Each vowel of the word ADJECTIVE is substituted with the next letter of the English alphabetical series, and each consonant is substituted with the letter preceding it. How many vowels are present in the new arrangement ?

(A) None

(B) One

(C) Two

(D) Three

(E) None of these

8. If in a certain language LATE is coded as 8&4$ and HIRE is coded as 7*3$ then how will HAIL be coded in the same language ?

(A) 7&8*

(B) &7*8

(C) 7*&8

(D) 7&*8

(E) None of these

9. How many such pairs of letters are there in word ENGLISH, each of which has as many letters between its two letters as there are between them in the English alphabets ?

(A) None

(B) One

(C) Two

(D) Three

(E) More than three

10. In a certain code ‘na pa ka so’ means ‘birds fly very high’, ‘ri so la pa’ means ‘birds are very beautiful’ and ‘ti me ka bo’ means ‘the parrots could fly’. Which of the following is the code for ‘high’ in that language ?

(A) na

(B) ka

(C) bo

(D) so

(E) None of these

Directions—(Q. 11–15) In each of the questions below are given three statements followed by two conclusions numbered I and II. You have to take the given statements to be true even if they seem to be at variance from commonly known facts. Read both the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.

Read the statements and the conclusions which follow it and

Give answer—

(A) if only conclusion I is true.

(B) if only conclusion II is true.

(C) if either conclusion I or conclusion II is true.

(D) if neither conclusion I nor conclusion II is true

(E) if both conclusions I and II are true.

11. Statements : All stars are suns.

Some suns are planets.

All planets are satellites.

Conclusions :

I. Some satellites are stars.

II. No star is a satellite.

12. Statements : All fishes are birds.

All birds are rats.

All rats are cows.

Conclusions :

I. All birds are cows

II. All rats are fishes

13. Statements : All curtains are rods.

Some rods are sheets.

Some sheets are pillows.

Conclusions :

I. Some pillows are rods.

II. Some rods are curtains.

14. Statements : Some walls are windows.

Some windows are doors.

All doors are roofs.

Conclusions :

I. Some doors are walls.

II. No roof is a window.

15. Statements : All switches are plugs.

Some plugs are bulbs.

All bulbs are sockets.

Conclusions :

I. Some sockets are plugs.

II. Some plugs are switches.

Directions—(Q. 16–20) Study the sets of numbers given below and answer the questions, which follow :

489 – 541 – 654 – 953 – 983

16. If in each number, the first and the last digits are interchanged, which of the following will be the second highest number ?

(A) 489

(B) 541

(C) 654

(D) 953

(E) 783

17. If in each number, all the three digits are arranged in ascending order, which of the following will be the lowest number ?

(A) 489

(B) 541

(C) 654

(D) 953

(E) 783

18. Which of the following numbers will be obtained if the first digit of lowest number is subtracted from the second digit of highest number after adding one to each of the numbers ?

(A) 1

(B) 2

(C) 3

(D) 4

(E) 5

19. If five is subtracted from each of the numbers, which of the following numbers will be the difference between the second digit of second highest number and the second digit of the highest number ?

(A) Zero

(B) 3

(C) 1

(D) 4

(E) 2

20. If in each number the first and the second digits are interchanged, which will be the third highest number ?

(A) 489

(B) 541

(C) 654

(D) 953

(E) 783

Answers ! ! !

SSC CHSL October 2012 - General Intelligence - few questions

1)      Khan travels 8 km from East and West and turns right to travel 2 km. Now he turns right and travels 5 km. In which direction is he now positioned with reference to the starting point?

A)    South-East                                    B) North-West

C) West                                   D) North

2)      X is poorer than W, but not as poor as B. C is not as poor as X. Who is the poorest of all?

A) B                      B) X                C) C                D) W

3)      The bus for Chennai leaves every 30 minutes from a bus depot. The enbquiry clerk told a passenger that the bus for Chennai left 10 minutes ago, and the next bus will leave at 10:30 am. What was the time when enquiry clerk told this ?

A) 10:20 am          B) 10:10 am    C) 10:00 am    D) 9:50 am

Directions: In question nos. 4 and 5 from the given alternatives select the word which cannot be formed using the letters of the given word.

4)      Ecofriendly

A)    Lend                B) Friend         C) Life                        D) Coffee

5)      ‘LIBERALISATION’

A)    RATIONAL   B) BEST         C) RELATION           D) RELATE

6)      In a certain code, PRIEST is written as OQHRDS. PRISTINE can be written as

A)    OQHRSHMD             B) OSHRQMDH        C) QORHHSMD        D) QOHRSHMD

7)      If DEAN is written as NOKX, how NEED be written in that code?

A)    NOOX                        B) XONO                   C) ONOX                  D) XOON

8)      In a certain code, OPERATION is written as EPOTARNOL. Which word will be written as ORPSECSES?

A)    PORCESESS              B) PROCESSESS      C) POSSESORC        D) PROSSESC

9)       

1	3	4
5	2	8
26	13	?

A)    12              B) 39               C) 3                 D) 80

10)  10        11        12

105      126      ?

A) 144             B) 149             C) 3                 D) 2

Answers ! ! !