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21 July, 22:17

Roland's heart beats 495 times in 6 minutes. At that rate, how many times would it beat in 20 minutes?

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  1. 21 July, 22:20
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    495/6=82.5

    82.5*=1650
  2. 21 July, 22:41
    0
    First get the beats into seconds ... 60*6 = 360 ... 20*60 = 1200sec ... 495/360 = 1.375 ... 1.375*1200 = 1650 ... then back to minutes ... 27.5 min ...

    the answer is 27.5 min
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