Q8
Two pipes A and B together can fill a cistern in 4 hours. Had they been opened separately, then B would have taken 6 hours more than A to fill the cistern. How much time will be taken by A to fill the cistern separately?
A.
1 hour
B.
2 hours
C.
6 hours
AnswerD.
8 hours
Answer: Option C
Solution
Answer: Option C
Solution:
Let the cistern be filled by pipe A alone in x hours.Then, pipe B will fill it in (x + 6) hours