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How Many Kilograms of Cement Containing 27.5%27.5 \% Sand Must Be Added to Cement Containing

Question 32

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How many kilograms of cement containing 27.5%27.5 \% sand must be added to cement containing 20.0%20.0 \% sand to obtain 45.0 kg45.0 \mathrm{~kg} of cement that is 24.6%24.6 \% sand?

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