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29 September, 11:57

When Jonas does his math homework, he spends an average of 3 minutes on each problem. Last night he spent 1.8 hours on his non-math homework, plus he completed 7 math problems. Approximately how much time did Jonas spend in total on all of his homework last night?

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  1. 29 September, 12:09
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    1.8hour = 1 hour 48 minute

    7 X 3 = 21

    1h 48 + 21

    108 + 21

    129

    2 hours 9 minutes

    Therefore he spent 2 hours and 9 minutes
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