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Mr. Willams’ physical education class lasts 7/8 hour. How many minutes are not spent on instructions? Explain

Mr. Willams’ physical education class lasts 7/8 hour. How many minutes are not spent-example-1

1 Answer

6 votes

Answer:

42 minutes are not spent on instructions

Explanation:

First, we must find out how many minutes is in
(7)/(8) hour


60*(7)/(8)=(60*7)/(8) =(420)/(8) =52.5

In
(7)/(8) hour, there is about 52
(1)/(2) minutes

Then we must add up the fractions that are NOT the instructions


(1)/(2) +(3)/(10) =(5)/(10) +(3)/(10) =(8)/(10) =(4)/(5)


(4)/(5) of the total time (52
(1)/(2) minutes) is not spent on instructions

Then we must multiply the fraction of time spent on other things (
(4)/(5)) by total time (52
(1)/(2) minutes) in order to find out how many minutes weren't spent on instructions.


(4)/(5)*52 (1)/(2) =(4)/(5)* (105)/(2)=(420)/(10) =42

42 minutes are not spent on instructions

User Bhawesh
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