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7 May, 23:27

He counted 206 wheels and 170 pedals. How many bicycles and tricycles does he have.

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  1. 8 May, 02:27
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    Bicycle has 2 wheels and 2 pedals

    tricycle has 3 wheels and 2 pedals

    EQ 1 : 2b + 2t = 170 pedals

    EQ 2: 2b + 3t = 206 wheels

    subtract EQ 1 from EQ 2

    2b + 3t = 206 - 2b + 2t = 170 = t=36

    there were 36 tricycles

    36 x 2 = 72 pedals

    170 pedals - 72 = 98 pedals left

    98/2 = 49 bicycles

    36 Tricycles and 49 bicycles
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