Two pipes can fill a cistern separately in 24 min
and 40 min respectively. Waste
pipe is
opened which can drain the cistern
cistern at 30
liters/minute. If all the pipe are opened together
then the cistern fills in one hour. The capacity (in
litre) of the cistern is?
A. 800
B. 400
C. 600
D. 500
E. None of these
Answers
Answered by
1
Answer:
Option C is correct answer
Step-by-step explanation:
The pipe A can fill in 24 minutes
the pipe B can fill in 40 minutes
and the pipe C can empty in x minutes.
124+140−1x=160 [given]
1x=124+140−160=5+3−212=6120=120
C can empty in 20 minutes.
In one minute, 'C' can waste 30 litres of water.
Capacity of the tank = 20×30 = 600 litres.
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