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- A water tank is two-fifth full.
Question 1:
A water tank is two-fifth full.Pipe A can fill a tank in 10 minutes and pipe B can empty it in 6 minutes.If both the pipes are open,how long will it take to empty or fill the tank completely? A. 6 min.to empty
Feedback Clearly,pipe B is faster than pipe A and so,the tank will be emptied.
part to be emptied = 2/5
part emptied by (A+B) in 1 minute=(1/6−1/10)=1/15
1/15:2/5::1:x
2/5*15=6mins
part to be emptied = 2/5
part emptied by (A+B) in 1 minute=(1/6−1/10)=1/15
1/15:2/5::1:x
2/5*15=6mins
B. 6 min.to fill
C. 9 min.to empty
D. 9 min.to fill
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