ruthheartbreak ruthheartbreak

20-10-2014
Mathematics

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there are 120 minutes in 2 hours. How many minutes are in 15 hours? what operation do I use

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20-10-2014

[tex]120\ minutes\ in\ 2\ hours\\\\ x\ minutes\ \ in\ \ 15\ hours\\\\\Making\ ratio:\\ 120-2\\x-15\\\\Cross\ multiplication\\\\ 120*15=2x\\\\1800=2x\ \ \ \ | divide\ by\ x\\\\ x=900\\\\900\ minutes\ in\ 15\ hours.[/tex]

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Аноним Аноним

20-10-2014

The operation is multiplication . Just do 60 times 15 . You will get 900

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