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Two pipes can fill an empty tank in 1.8 hours and 3 hours respectively while a third pipe can empty a tank filled in x hours. If all three pipes are opened simultaneously then an empty tank is completely filled in 2.25 hours. Find the value of x.1. 22. 2.253. 1.54. 2.5 |
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Answer» Correct Answer - Option 2 : 2.25 Given: ⇒ One pipe's 1 hours work = 1/1.8 ⇒ Second pipe's 1 hours work = 1/3 ⇒ Third pipe's 1 hours work = 1/x Calculation: ⇒ All three pipes opened simultaneously = 1/1.8 + 1/3 - 1/x ⇒ 1/2.25 = 1/1.8 + 1/3 - 1/x ⇒ 1/x = 1/2.25 Third pipe can empty tank in 2.25 hours. ∴ The value of x is 2.25 |
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