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17-05-2017
Mathematics

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Bernie counted the cars and motorcycles that passed his house in 45 minutes. He counted 26 vehicles and 88 tires. How many motorcycles passed his house

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17-05-2017

tires t = 88 = 4*cars + 2*motorcycles
total = 26 = cars + motorcycles

so 4*(26-motorcycles) + 2*motorcycles = 88 => motorcycles=8
so cars = 26-8 = 18

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