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Question

A2 type ‘P’ pipes can fill a tank in 525

hours, while B2 type ‘Q’ pipes can fill the same tank in 756 hours. (9A × 5B) type ‘P’ pipes can fill the same tank in how many hours? (Efficiency of a type P and a type Q pipe is same)

A 7 hrs

B 6 hrs

C 9 hrs

D 14 hrs

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