tab B alone takes 2 minutes longer than tap A to fill one tub. Working together, they can fill the tub 4 times in 5 minutes. How long does it take tap A (alone) to fill one tub? ((to 2 decimal places if necessary))

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- May 24th 2008, 10:36 AM #1

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- May 24th 2008, 10:53 AM #2

- May 24th 2008, 11:01 AM #3

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- May 24th 2008, 11:19 AM #4
Hi, finch41. As galactus explained, is the amount of time it takes tap A to fill 1 tub. That means tap A fills 1 tub per minutes, so the rate is . Similarly, tap B takes minutes (2 minutes more than tap A) to fill the tub, so it has a fill rate of 1 tub per minutes, or . But, when both taps are on, they fill 4 tubs every 5 minutes, so we have a rate of . This gives us the equation,

Solve for .