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Four pipes can fill a tank in 70 minutes.how long will it take to fill the tank with 7 pipes are used
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Four pipes can fill a tank in 70 minutes.how long will it take to fill the tank with 7 pipes are used

User Prince Hamza
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Set it up like a ratio: pipes on the top and minutes on the bottom. Therefore, your ratio would be 4/70 = 7/x. Cross-multiply to get 4x=490 and x = 122.5 minutes. Change that to hours if you'd like by dividing by 60!
User James Hay
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