Can u plz help me with this question no.12 step by step
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Step-by-step explanation:
Time taken by a pipe A to fill an empty tank = 6 hours
Time taken by a pipe B to fill an empty tank = 4 hours
Time taken by pipe A to fill an empty tank in 1 hour = 1/6 part.
Time taken by pipe B to fill an empty tank in 1 hour = 1/4 part
Together can they fill an empty tank in 1 hour =
(1/6 + 1/4) = 5 /12 part
Therefore, together they can fill an empty tank completely = (1 ÷ 5/12) = 12/5 hours = 2 hours 40 minutes
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