Aptitude and Reasoning Part-3
41. Perimeter of the back wheel = 9 feet, front wheel = 7 feet on a certain
distance, the front wheel gets 10 revolutions more than the back wheel .What is
the distance?
Ans : 315 feet.
42. Perimeter of front wheel =30, back wheel = 20. If front wheel revolves
240 times. How many revolutions will the back wheel take?
Ans: 360 times
43. 20% of a 6 litre solution and 60% of 4 litre solution are mixed. What
percentage of the mixture of solution
Ans: 36%
44City A's population is 68000, decreasing at a rate of 80 people per year.
City B having population 42000 is increasing at a rate of 120 people per year.
In how many years both the cities will have same population?
Ans: 130 years
45Two cars are 15 kms apart. One is turning at a speed of 50kmph and the
other at 40kmph . How much time will it take for the two cars to meet?
Ans: 3/2 hours
46A person wants to buy 3 paise and 5 paise stamps costing exactly one
rupee. If he buys which of the following number of stamps he won't able to buy
3 paise stamps.
Ans: 9
47There are 12 boys and 15 girls, How many different dancing groups can be
formed with 2 boys and 3 girls.
48Which of the following fractions is less than 1/3
(a) 22/62 (b) 15/46 (c) 2/3 (d) 1
Ans: (b)
49There are two circles, one circle is inscribed and another circle is
circumscribed over a square. What is the ratio of area of inner to outer
circle?
Ans: 1 : 2
50Three types of tea the a,b,c costs Rs. 95/kg,100/kg
and70/kg respectively. How many kgs of each should be blended to produce 100 kg
of mixture worth Rs.90/kg, given that the quntities of band c are equal
a)70,15,15 b)50,25,25 c)60,20,20 d)40,30,30
Ans. (b)
51. in a class, except 18 all are above 50 years. 15 are below 50 years of
age. How many people are there
(a) 30 (b) 33 (c) 36 (d) none of these.
Ans. (d)
52. If a boat is moving in upstream with velocity of 14 km/hr and goes
downstream with a velocity of 40 km/hr, then what is the speed of the stream ?
(a) 13 km/hr (b) 26 km/hr (c) 34 km/hr (d) none of these
Ans. A
53. Find the value of ( 0.75 * 0.75 * 0.75 - 0.001 ) / ( 0.75 * 0.75 -
0.075 + 0.01) (a) 0.845 (b) 1.908 (c) 2.312 (d) 0.001
Ans. A
54. A can have a piece of work done in 8 days, B can work three times
faster than the A, C can work five times faster than A. How many days will they
take to do the work together ? (a) 3 days (b) 8/9 days (c) 4 days (d) can't say
Ans. B
55. A car travels a certain distance taking 7 hrs in forward journey,
during the return journey increased speed 12km/hr takes the times 5 hrs.What is
the distance travelled
(a) 210 kms (b) 30 kms (c) 20 kms (c) none of these
Ans. B
56. Instead of multiplying a number by 7, the number is divided by 7. What
is the percentage of error obtained ?
57. Find (7x + 4y ) / (x-2y) if x/2y = 3/2 ? (a) 6 (b) 8 (c) 7 (d) data insufficient
Ans. C
58. A man buys 12 lts of liquid which contains 20% of the liquid and the
rest is water. He then mixes it with 10 lts of another mixture with 30% of
liquid.What is the % of water in the new mixture?
59. If a man buys 1 lt of milk for Rs.12 and mixes it with 20% water and
sells it for Rs.15, then what is the percentage of gain?
60. Pipe A can fill a tank in 30 mins and Pipe B can fill it in 28 mins.If
3/4th of the tank is filled by Pipe B alone and both are opened, how much time
is required by both the pipes to fill the tank completely ?