C DOT General Aptitude Questions Aptitude Questions Set III
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in a class, except 18 all are above 50 years. 15 are below 50 years of age. How many people are there

30

33

36

none of these.
Answer: d


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?

13 km/hr

26 km/hr

34 km/hr

none of these
Answer: a


Find the value of (0.75 * 0.75 * 0.75 − 0.001)/(0.75 * 0.75 − 0.075 + 0.01)

0.845

1.908

2.312

0.001
Answer: a


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?

3 days

8/9 days

4 days

can't say
Answer: b


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

210 kms

30 kms

20 kms
(c) none of these
Answer: b


Instead of multiplying a number by 7, the number is divided by 7. What is the percentage of error obtained?

Find (7x + 4y)/(x − 2y) if x/2y = 3/2?

6

8

7

data insufficient
Answer: c


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?

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?

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?

If on an item a company gives 25% discount, they earn 25% profit. If they now give 10% discount then what is the profit percentage.

40%

55%

35%

30%
Answer: d


A certain number of men can finish a piece of work in 10 days. If however there were 10 men less it will take 10 days more for the work to be finished. How many men were there originally?

110 men

130 men

100 men

none of these
Answer: a


In simple interest what sum amounts of Rs. 1120/in 4 years and Rs. 1200/in 5 years?

Rs. 500

Rs. 600

Rs. 800

Rs. 900
Answer: c


If a sum of money compound annually amounts of thrice itself in 3 years. In how many years will it become 9 times itself.

6

8

10

12
Answer: a


Two trains move in the same direction at 50 kmph and 32 kmph respectively. A man in the slower train observes the 15 seconds elapse before the faster train completely passes by him. What is the length of faster train?

100m

75m

120m

50m
Answer: b


How many mashes are there in 1 squrare meter of wire gauge if each mesh is 8mm long and 5mm wide?

2500

25000

250

250000
Answer: b


x% of y is y% of?

x/y

2y

x

can't be determined
Answer: c


The price of sugar increases by 20%, by what % should a housewife reduce the consumption of sugar so that expenditure on sugar can be same as before?

15%

16.66%

12%

9%
Answer: b


A man spends half of his salary on household expenses, 1/4th for rent, 1/5th for travel expenses, the man deposits the rest in a bank. If his monthly deposits in the bank amount 50, what is his monthly salary?

Rs. 500

Rs. 1500

Rs. 1000

Rs. 900
Answer: c


The population of a city increases @ 4% p. a. There is an additional annual increase of 4% of the population due to the influx of job seekers, find the % increase in population after 2 years?

The ratio of the number of boys and girls in a school is 3: 2 Out of these 10% the boys and 25% of girls are scholarship holders. % of students who are not scholarship holders.

15 men take 21 days of 8 hrs. Each to do a piece of work. How many days of 6 hrs. Each would it take for 21 women if 3 women do as much work as 2 men?

30

20

19

29
Answer: a


A cylinder is 6 cms in diameter and 6 cms in height. If spheres of the same size are made from the material obtained, what is the diameter of each sphere?

5 cms

2 cms

3 cms

4 cms
Answer: c


A rectangular plank (2) ½ meters wide can be placed so that it is on either side of the diagonal of a square shown below (Figure is not available). What is the area of the plank? Ans: 7 * (2) ½

The difference b/w the compound interest payble half yearly and the simple interest on a certain sum lent out at 10% p. a for 1 year is Rs. 25. What is the sum?

Rs. 15000

Rs. 12000

Rs. 10000

none of these
Answer: c


What is the smallest number by which 2880 must be divided in order to make it into a perfect square?

3

4

5

6
Answer: c


A father is 30 years older than his son however he will be only thrice as old as the son after 5 years what is father's present age?

40 yrs

30 yrs

50 yrs

none of these
Answer: a


An article sold at a profit of 20% if both the cost price and selling price would be Rs. 20/the profit would be 10% more. What is the cost price of that article?

If an item costs Rs. 3 in '9 and Rs. 203 in '0. What is the % increase in price?

200/3 %

200/6 %

100%

none of these
Answer: a


5 men or 8 women do equal amount of work in a day. a job requires 3 men and 5 women to finish the job in 10 days how many woman are required to finish the job in 14 days.

10

7

6

12
Answer: b


A simple interest amount of rs 5000 for six month is rs 200. What is the anual rate of interest?

10%

6%

8%

9%
Answer: c


In objective test a correct ans score 4 marks and on a wrong ans 2 marks are____. a student score 480 marks from 150 question. How many ans were correct?

120

130

110

150
Answer: n/a


An artical sold at amount of 50% the net sale price is rs 425. What is the list price of the artical?

500

488

480

510
Answer: a


A man leaves office daily at 7pm A driver with car comes from his home to pick him from office and bring back home One day he gets free at 5: 30 and instead of waiting for driver he starts walking towards home. In the way he meets the car and returns home on car He reaches home 20 minutes earlier than usual. In how much time does the man reach home usually? Ans: 1hr 20min

A works thrice as much as B. If A takes 60 days less than B to do a work then find the number of days it would take to complete the work if both work together? Ans: 22½days

How many 1's are there in the binary form of 8 * 1024 + 3 * 64 + 3 Ans: 4

In a digital circuit which was to implement (A B) + (A) XOR (B), the designer implements (A B) (A) XOR (B) What is the probability of error in it?

A boy has Rs. 2. He wins or loses Re 1 at a time If he wins he gets Re 1 and if he loses the game he loses Re 1. He can loose only 5 times. He is out of the game if he earns Rs. 5. Find the number of ways in which this is possible? Ans: 16

If there are 1024 * 1280 pixels on a screen and each pixel can have around 16 million colors Find the memory required for this? Ans: 4MB

On a particular day A and B decide that they would either speak the truth or will lie. C asks A whether he is speaking truth or lying? He answers and B listens to what he said. C then asks B what A has said B says “A says that he is a liar” What is B speaking?

Truth

Lie

Truth when A lies

Cannot be determined
Answer: b


What is the angle between the two hands of a clock when time is 8: 30 Ans: 75 (approx)

A student is ranked 13th from right and 8th from left. How many students are there in totality?

A man walks east and turns right and then from there to his left and then 45degrees to his right. In which direction did he go Ans: North west

A student gets 70% in one subject, 80% in the other. To get an overall of 75% how much should get in third subject.

A man shows his friend a woman sitting in a park and says that she the daughter of my grandmother's only son. What is the relation between the two Ans: Daughter

How many squares with sides ½ inch long are needed to cover a rectangle that is 4 ft long and 6 ft wide

24

96

3456

13824

14266


If a = 2/3b, b = 2/3c, and c = 2/3d what part of d is b/

8/27

4/9

⅔

75%
Answer: b


Successive discounts of 20% and 15% are equal to a single discount of

30%

32%

34%

35%
Answer: b


The petrol tank of an automobile can hold g liters. If a liters was removed when the tank was full, what part of the full tank was removed?

ga

g/a

a/g

(ga)/a
Answer: c


If x/y = 4 and y is not 0 what % of x is 2xy

150%

175%

200%

250%
Answer: b
