Question

Three taps a, b and c together can fill an empty cistern in 10 min. The tap a alone can fill it in 30 min and the tap b alone can fill it in 40 min. How long will the tap c alone take to fill it?

Answer 1

Answer:

24minutes

Step-by-step explanation:

part of cistern filled by tap A,B and C in 1 minute = 1/10

part of cistern filled by tap A and B in 1 minute =1/30+1/40=4+3/120=7/120

part of cistern filled by tap C in 1 minute= 1/10-7/120=12-7/120=5/120= 1/24

=24minutes

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Answer 2

Answer:

The alone tap c filled the same empty cistern in 40 minutes..