Q. paul sat a 2 1/2 hour exam. he finished 13/15 of the way through the exam. calculate the amount of time he has spare at the end,in minutes.
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2/15 of 2 1/2 = 1/3 hours = 20 minutes
mathhelp30:
it is 13/15 not 2/16
not 2/15
I never meant it is 2/16
Is infact, 1 - 13/15 = 2/15
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