TCS Papers: Sample Questions 16 - 17 of 502

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Question number: 16

» Aptitude

MCQ▾

Question

The average temperature of Tuesday, Wednesday and Thursday was 37 C. The average temperature of Wednesday and Thursday and Friday was 38 C. If the temperature on Friday was 39 C. Find the temperature on Tuesday.

Choices

Choice (4) Response

a.

37.33

b.

36

c.

38.33

d.

Question does not provide sufficient data or is vague

Answer

b.

Explanation

The average temperature of Tuesday, Wednesday and Thursday was 37 C.

The average temperature of Wednesday and Thursday and Friday was 38 C.

Temperature on Friday is 39.

Subtracting equation (i) from equation (ii),

So,

So, temperature on Tuesday was 36 C.

Question number: 17

» Aptitude

MCQ▾

Question

X takes 4 days to complete one-third of a job, Y takes 3 days to complete one-sixth of the same work and Z takes 5 days to complete half the job. If all of them work together for 3 days and X and Z quit, how long will it take for Y to complete the remaining work done.

Choices

Choice (4) Response

a.

6 days

b.

8.1 days

c.

7 days

d.

5.1 days

Answer

d.

Explanation

X takes 4 days to complete one third of a job.

Let he takes x days to complete the whole work.

Y takes 3 days to complete one sixth of a job.

Let he takes y days to complete the whole work.

Z takes 5 days to complete half of a job.

Let he takes z days to complete the whole work.

For 3 days they all are working together.

Yet of work is remaining.

After 3 days X and Z are leaving and only Y will complete work.

Whole work is done by Y in 18 days

Then 17/60 of work can be done by Y in (? ) days.

Y can complete the remaining work in 5.1 days.