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Pipe A fill a tank in 36minutes and pipe B fill a tank in 48minutes and both are opened togather take time to fill the tank in 24 minutes at what time pipe B closed? |
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Answer» Let the total capacity of the TANK be 96 units (LCM of 24 & 32). A fills = 24 96
= 4 units / minute. B fills = 32 96
= 3 units / minute. Let the time for which B is opened is x minutes. According to the question, 4 × 18 + 3 × x = 96 3x = 96 - 72 = ⇒ 3x = 24 x = 8 minutes. The pipe B should be CLOSED after 8 minutes. |
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