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30 December, 19:20

Tim spent 90 minutes completing his chores. if 40% of this time he was cleaning, how many minutes did he spend not cleaning?

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  1. 30 December, 21:23
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    If he spent 40% of his time cleaning, that means he spent 60% of his time not cleaning and to find out how many minutes that is you find 60% of 90 minutes which is 90 x. 6 which equals 54 minutes
  2. 30 December, 23:09
    0
    Since 40% of 90 is equivalent to 36, you have to subtract 90 and 36 to find out how many minutes he spent without cleaning, which would be 54 minutes that he spent not cleaning.
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