If two pipes function simultaneously, a reservoir will be filled in 12 hours. One pipe fills the reservoir 10 hours faster than the other. How many hours does the faster pipe take to fill the reservoir? Options: A . &nbsp10 hr. B . &nbsp15 hr. C . &nbsp15 hr. D . &nbsp20 hr.

If two pipes function simultaneously, a reservoir will be filled in 12 hours.

Question

If two pipes function simultaneously, a reservoir will be filled in 12 hours. One pipe fills the reservoir 10 hours faster than the other. How many hours does the faster pipe take to fill the reservoir?

Options:

A . 10 hr.

B . 15 hr.

C . 15 hr.

D . 20 hr.

Answer: Option D

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