TCS Papers: Sample Questions 16  17 of 502
Examrace Placement Series prepares you for the toughest placement exams to top companies.
Question number: 16
» Aptitude
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
Question
X takes 4 days to complete onethird of a job, Y takes 3 days to complete onesixth 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.