what percentage of a mixture of sand, gravel and cement
containing 30% cement should be replaced...
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what percentage of a mixture of sand, gravel and cementcontaining 30% cement should be replaced by pure cement in order toproduce a mixture that is 40% cement?
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Suppose amount of the mixture is A It is given in the question that the mixture contains 30 cement Therefore the amount of cement 30 100 A 03A Now assume x amount of mixture is replaced by pure cement in order to produce a mixture that
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