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- One fill pipe A is 3 times faster than second fill pipe B and takes 32 minutes less than the fill pipe B.
Question 1:
One fill pipe A is 3 times faster than second fill pipe B and takes 32 minutes less than the fill pipe B. When will the cistern be full if both pipes are opened together? A. 8 min
B. 9 min
C. 10 min
D. 12 min
Feedback Let pipe A takes p min to fill
pipe B takes 3p min to fill
3p - p = 32
p = 16 min => 3p = 48 min
Required, both pipes to fill = (48 x 16)/(48 + 16) min = 12 min.
pipe B takes 3p min to fill
3p - p = 32
p = 16 min => 3p = 48 min
Required, both pipes to fill = (48 x 16)/(48 + 16) min = 12 min.
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