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between 9 am and 6:36 am, the water in a swimming pool decreased by 8/25 in. assuming that the water level decreased at a constant rate, how much did the water level drop each hour

User Limitfan
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1 Answer

5 votes

Answer: 2/15 in/hour

Explanation:


\displaystyle\\1)\ 6:36=\\\\6(36)/(60)=\\\\6(3(12))/(5(12))=\\\\6(3)/(5)=\\\\(6*5+3)/(5)=\\\\(30+3)/(5)=\\\\(33)/(5) \ hours


\displaystyle\\2)\ 9-(33)/(5) =\\\\(9(5)-33)/(5)=\\\\(45-33)/(5) =\\\\(12)/(5)\ hours


\displaystyle\\3)\ (8)/(25):(12)/(5) =\\\\(8)/(25)*(5)/(12) =\\\\(8(5))/(25(12)) =\\\\(2*4*5)/(5*5*4*3) =\\\\(2)/(5*3) =\\\\(2)/(15)\ in/hour

User AZarketa
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