Mathematics, 11.02.2021 18:10 lazybridplayer

Michael has a summer job as a bricklayer’s assistant. He is responsible for mixing the concrete. Concrete is made of cement, sand, and gravel in a ratio of 1:3:4 by mass. Michael needs to make 80 kg of concrete. How much cement, sand and gravel does Michael need to mix together to make 80 kg of concrete?

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Michael has a summer job as a bricklayer’s assistant. He is responsible for mixing the concrete. Con...

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