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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

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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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

User Oscar Sun
by
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1 Answer

2 votes
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
User Larsdk
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