How long will two pipes together take to fill a cistern which they can separetly fill in 20 minutes and 25 minutes ?
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Answered by
0
Answer:
In one minute, A and B can fill = 125+130=6+5150=11150 part
In 10 minutes, A and B can fill = 11150×110=1115 part
Remaining part = 1−1115=415 part
415 part is to be filled by A
In one minute A can fill 125 part
415 part can be filled in minutes 415×25=203=623 minutes
Total time taken to fill the tank 10+623=1623 minutes
Part of solved Pipes and Cisterns questions and answers : >> Aptitude >> Pipes and Cisterns
Hope this helps!
Answered by
1
Answer:
Part of cistern filled by 1st pipe in 1 min = 1/20
Part of cistern filled by 2nd pipe in 1 min = 1/25
Therefore part of cistern filled by both the pipes together in 1 min = 1/20 + 1/25
= 9/100
Hence the cistern will be filled by both the pipes together in 100/9 min.
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