SSC
Sample Paper
SSC CHSL (10+2) Sample Test Paper-15
question_answer
Four taps can individually fill a cistern of water in 1 hour, 2 hours, 3 hours and 6 hours respectively. If all the four taps are opened simultaneously, the cistern can be filled in how many minutes?
A)20 minute
B)30 minute
C)35 minute
D)40 minute
Correct Answer:
B
Solution :
Time required \[=\frac{6}{6+3+2+1}hrs.\] \[=\frac{6}{12}\times 60\] minutes = 30 minutes