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Pipe ‘A’ can fill a tank in 10 hours while pipe ‘B’ can empty it in 12 hours. They were operated on alternate hours starting with pipe ‘A’. Find the percentage of tank filled this way in 30 hours.

A 47.5%

B 25%

C 37.5%

D 27.5%

E 5%

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Relevant for Exams:

IIFCL Grade A/B

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