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One pump can fill a tank with oil in 4 hours. A second pump can fill the same tank in 3 hours. If both pumps are used at the same time how long will they take to fill the tank?
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One pump can fill a tank with oil in 4 hours. A second pump can fill the same tank in 3 hours. If both pumps are used at the same time how long will they take to fill the tank?

User Georgii Lvov
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7 votes
Answer: 1 and 5/7 hours

If not the answer sorry in advance
User Mehdi Bugnard
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