gilbertovalenti gilbertovalenti

20-10-2016
Mathematics

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Mr. william phisics class lasts 7/8 of an hour, 3/10 is used on arming up . How many minutes do they take to warm up..NOT FRACTIONS, minutes PLEASE HELP

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apologiabiology apologiabiology

20-10-2016

7/8
3/10 of 7/8 means 3/10 times 7/8=21/80

1hour=60mins
60 times 21/80=1260/80=15.75

answer is 15.75 mins

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