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)1.5hr
e)3hr
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
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
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