One fill pipe A is 10 times faster than second fill pipe B. If B can fill a cisten in 55 mins, then find the time when the cistern will be full if both fill pipes are opened together.
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A is 10 times faster than B
B alone can fill a cistern in 55 minutes
A is 55*10=550
Converting into minutes 550/60
A can fill a cistern in 9 minutes 17 seconds
If both are opened at a time then time taken to fill a cistern is =
9.17+55/2=32 minutes 08 seconds
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