Robert climbs 775 steps in 12 1/2 minutes. How many steps did he average per minute?
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Step-by-step explanation:
775 divided by 25/2 =
775 * 2/25 =
31 * 2 = <--- 775 = 700 + 75 = 100*7 + 75 = (4*25)*7 + 3*25 = 25 * (4*7 + 3) = 25*31
=62
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