Quant Quiz
1. If 90% of A =30% of B and B=x% of A, then the value of x is?
(1) 800
(2) 300
(3) 700
(4) 400
(5) None of these
2. Three sets of 40, 50 and 60 students
appeared for an examination and the pass percentage was 100, 90 and 80
respectively. the pass percentage of the whole set is
(1) 88.33
(2) 84.33
(3) 88.66
(4) 84.66
(5) None of these
3. If x is less than y by 25% then y exceed x by:
(1) 33.33%
(2) 25%
(3) 75%
(4) 66.66%
(5) None of these
4. Out of seven given numbers, the average
of the first four numbers is 4 and that of the last four numbers is
also 4. If the average of all the seven numbers is 3, fourth number is
(1) 3
(2) 4
(3) 7
(4) 11
(5) None of these
5. The average of three consecutive odd
numbers is 12 more than one third of the first of these numbers. What is
the last of the three numbers?
(1) 15
(2) 17
(3) 19
(4) Data inadequate
(5) None of these
6. The percentage profit earned by selling
an article for Rs. 1920 is equal to the percentage loss incurred by
selling the same article for Rs. 1280. At what price should the article
be sold to make 25% profit?
(1) Rs. 2000
(2) Rs. 2200
(3) Rs. 2400
(4) Data inadequate
(5) None of these
7. Two trains of equal lengths take 10
seconds and 15 seconds respectively to cross a telegraph post. If the
length of each train be 120 metres, in what time (in seconds) will they
cross each other travelling in opposite direction?
(1) 10
(2) 15
(3) 12
(4) 20
(5) None of these
8.
In Arun's opinion, his weight is greater than 65 kg but less than 72
kg. His brother doest not agree with Arun and he thinks that Arun's
weight is greater than 60 kg but less than 70 kg. His mother's view is
that his weight cannot be greater than 68 kg. If all are them are
correct in their estimation, what is the average of different probable
weights of Arun?
(1) 67 kg.
(2) 68 kg.
(3) 69 kg.
(4) Data inadequate
(5) None of these
9. A, B and C start at the same time in
the same direction to run around a circular stadium. A completes a round
in 252 seconds, B in 308 seconds and c in 198 seconds, all starting at
the same point. After what time will they again at the starting point ?
(1) 26 minutes and 18 seconds
(2) 42 minutes and 36 seconds
(3) 45 minutes
(4) 46 minutes and 12 seconds
(5) None of these
10. There is 60% increase in an amount in 6
years at simple interest. What will be the compound interest of Rs.
12,000 after 3 years at the same rate?
(1) Rs. 2160
(2) Rs. 3120
(3) Rs. 3972
(4) Rs. 6240
(5) None of these
Answers with Explanation:-
1. (2)
A*(90/100) = (B*30)/100
= A x 3 = B
= A x x% = A x 3 = (x/100) = 3
x = 300
2. (3)
Required percentage = (40*100+50*90+60*80)/(40+50+60) = 88.66%
3. (1)
Let y be 100
x = 75
Required percent = (25*100)/75 = 33.33%
4. (4)
Fourth number = (4x4+4x4 – 3x7)
= (16 + 16-21) = 11
5. (3)
If the smallest number be x, then
(x/3)+12 = x+2
x + 36 = 3x + 6
3x - x = 36-6
2x = 30
x =15
third number = 15 + 4 = 19
6. (1)
7. (3)
Speed of the first train = 120/10 = 12 m/sec.
Speed of the second train =120/15= 8 m/sec.
Relative speed = (12 + 8) = 20 m/sec.
Therefore Required time =(120 + 120)/20 = 12 sec.
8. (1)
Let Arun's weight by X kg.
According to Arun, 65 < X < 72
According to Arun's brother, 60 < X < 70.\
According to Arun's mother, X <= 68
The values satisfying all the above conditions are 66, 67 and 68.
Required average = 66 + 67 + 68/3 = 201/3 = 67 kg.
9. (4)
L.C.M. of 252, 308 and 198 = 2772.
So, A, B and C will again meet at the starting point in 2772 sec. i.e., 46 min. 12 sec.
10. (3)
0 comments:
Post a Comment