It takes 6 hours for pump A, used alone, to fill a tank of water.?
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Pump B used alone takes 8 hours to fill thesame tank. We want to use three pumps: A, B and another pump C to fill the tank in 2 hours. What should be the rate of pump C? How long would it take pump C, used alone, to fill the tank?
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Answer:
Didn't we answer this one already? Is your teacher using the same questions as last year? Yeah... we sure did: http://answers.yahoo.com/search/search_result;_ylt=AriD0_.VlhM1fSp8O0ATf3mC6xR.;_ylv=3?p=It+takes+6+hours+for+pump+A%2C+used+alone%2C+to+fill+a+tank+of+water&submit-go=Search+Y!+Answers
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Other answers
here is what i have. C=4 hours and 48 min. considering that you need to have each one to pump their amount in an hour it will look like this 1/6+1/8+C=1/2 C=4h48min (in time) C=4.8 (in numbers) C=5/24 (in fractions) 1/6+1/8+5/24=1/2 (in one hour) 1/3+1/4+5/12= 1 (in two hours)
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