Patios can be made by mixing cubic meters of cement, gravel, and stones in the ratio 9:4:6. How much gravel is needed to make 209 cubic meters of patio?
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1 answer

cement : gravel : stones =9:4:6 = 9x : 4x : 6x
9x+4x+6x=209
x = 11
amount of gravel = 4x = 44 👍
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answered by mathhelper
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