Two pipes a and b can fill a tank in 12 hours and 15 hours respectively.if both pipe open together ...
Two pipes a and b can fill a tank in 12 hours and 15 hours respectively.if both pipe open together in tank,then how much time it take to fill the tank?
Answer/Solution
20/3
Steps/Work
in 1 hour pipe a fill=1/12
in 1 hour pipe b fill=1/15
pipe(a+b) in 1 hour=[1/12+1/15]=3/20
total time taken to fill the tank=20/3 hour
answer C
in 1 hour pipe b fill=1/15
pipe(a+b) in 1 hour=[1/12+1/15]=3/20
total time taken to fill the tank=20/3 hour
answer C