Two pipes A and B can fill a cistern in 20 minutes and 30 minutes
respectively. If these pipes are turned on alternately for 1 minute each
how long will it take to the cistern to fill?
Answers
Answer:

24
Q:
Two pipes A and B can fill a cistern in 4 minutes and 6 minutes respectively . If these pipes are turned on alternately for 1 minute each how long will it take to the cistern to fill?
Answer:
As the pipes are operating alternatively, thus their 2 minutes job is = 14 + 16 = 51214 + 16 = 512
In the next 2 minutes the pipes can fill another 512512 part of cistern.
Therefore, In 4 minutes the two pipes which are operating alternatively will fill 512 + 512 = 56512 + 512 = 56Remaining part = 1 − 56 = 161 - 56 = 16
Pipe A can fill 1414 of the cistern in 1 minute
Pipe A can fill 1616 of the cistern in = 2323 min
Therefore, Total time taken to fill the Cistern
4 + 2323 minutes.
Step-by-step explanation:
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