math

One night Angel spent 2 hours and 41 minutes doing homework. She spent 43 minutes on math, 37 minutes on language arts, and half an hour on science. The rest of her time was spent on social studies. How much time did she spend on social studies?

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  1. she spend 60*2+41 minutes on homework: 161minutes

    she spend on 43 min on math, 37 on language, and 60 min on science: total 140 min

    so how much is left?

  2. 51
    work:
    60*2=120+41=161
    43+37+30=110
    161-110=51

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  3. 45+35=80

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