Night Class: Quant Quiz

Posted byadmin Published On February 2nd, 2016 Leave a comment on Night Class: Quant Quiz

1. The average age of a man and his son is 45 years. The ratio of their ages is 5 : 1. What is the difference between the ages of the man and his son?

a)40 years

b)60 years

c)55 years

d)45 years

e)None of these

2. The difference between 41% of a number and 15% of the same number is 390. What is 33% of the number?

a)360

b)495

c)490

d)150

e)395

3. The inner diameter of a well is 18meters. If the well is 28 metres deep then what is its volume?

a)7218 cu m

b)7282 cu m

c)7128 cu m

d)7028 cu

e)None of these

4. If a commission of 10% is given on MP of book ,the publisher gains 20% if the commission is increase to 15% the gain % is ? 

a) 40/3

b) 10

c) 20

d) 15

e) None of these

5. A takes 2 hr more than B to walk D km .if A double his speed than he can make it in 1 hr less than B. How much time does B require for walking D km?

a) 4 hr

b) 1 hr

c) 2.5 hr

d) 1.5 hr

e) 3 hr

6. The circumferences two concentric circles are 186m and 142m. What is difference between their radii?

a)7m

b)10m

c)11m

d)8m

e)14m

7. In a class of 45 students and 8 teachers, each student got sweets that are 20% of the total number of students and each teacher got sweets that are 40% of the total number of students. How many sweets were there?

a) 484

b) 549

c) 600

d) 449

e) 550

8. There are two examinations rooms A and B. If 10 students are sent from A to B, then the number of students in each room is the same. If 20 candidates are sent from B to A, then the number of students in A is double the number of students in B. The number of students in room A is:

a) .20

b) .80

c) 100

d) .200

e) None of these

9. A.train covers a distance of 880 km in 16 hours. What is the average speed of the car, if the speed of the car is 30% less than the speed of the train?

a)71.5 kmph

b)60 kmph

c)38.5 kmph

d)40 kmph

e)37.5 kmph

10. A is 30% more efficient than B. How much time will they, working together, take to complete a job which A alone could have done in 23 days?

a) 11 days

b) 13 days

c) 20 days

d) 15 days

e) None of these

11. A does half as much work as B in three-fourth of the time. If together they take 18 days to complete the work, how much time shall B take to do it?

a) 30 days

b) 40 days

c) 15 days

d)24 days

e) None of these

Direction (12-13):Find the approximate value should come in the question mark ?

12. 12591 / 39.8 + 933 / 13 – 12.86 * 14.2 + 135 = ?

a) 340

b) 330

c) 325

d)350

e)355

13.  33% of 1235 + 917 / 12 – 129% of 765 + 682 = ? 

a) 160 

b) 180

c) 200

d) 210

e)225

14. In simultaneous throw of two coins,the probability of getting at least one head is:

a) 1/2

b) 2/3

c) 3/4

d) 1/3

e) None of these

15. A bag contains 6 black balls and 8 white balls. one ball is drawn at random.what is the probability that the ball drawn is white:

a) 4/7

b) 3/4

c) 4/5

d)1/8

e)None of these

Answers with explanation:

1.b

3=45

1=15

4=60

2.b

3.c

V=Pie r^2h

=22/7*9^2*28=7128

4.a

Let M.P=100

SP1=90

CP=90*100/120=75

SP2=85

P%=10/75*100=40/3

5.a

Let time taken by B =t

so time taken by A=t+2

when speed of A is double then time taken by A=(t+2)/2

so,(t+2)/2= t-1

t=4 hr

6.a

7.b

 Numbers of sweets got by students = 45*9=405

Numbers of sweets got by teachers = 8*18=144

Recquired Sweets=405+144=549

8.c Let numbers of students in A and B are x and y

x-10=y+10

x-y=20…….(1)

(x+20)/(y-20)=2

x-2y=-60…….(2)

From above Eq.

x=100

9.c

Speed of train=880/16*70/100=38.5

10.b

        13 A

       

        10 B

Total work=13*23

Recquired time=13*23/23=13 days

11.a

 Let B has done the work in x days

A/2=3/4x

A=3/2x days

2/3x+1/x=1/18

x=30 days

12.a

13.b

14.c

 n(E)=HT,TH,HH

P(E)=3/4

15.a

8/14=4/7