Bob the builder is making 480kg of concrete mix. Concrete is made by mixing cement, sand and gravel in the ratio 1 : 3 : 4
How much sand does he need?
SAND=.........?
CEMENT......?
GRAVEL.....?
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Bob the builder is making 480kg of concrete mix. Concrete is made by mixing cement, sand and gravel in the ratio 1 : 3 : 4
How much sand does he need?
SAND=.........?
CEMENT......?
GRAVEL.....?
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