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notsponge [240]
3 years ago
5

Shaun needs to make mortar for brick-laying. It is made in the ratio 7:3 of sand to cement.

Mathematics
1 answer:
Tju [1.3M]3 years ago
7 0
Sand to cement
7:3

210:x

ask yourself what number is needed to multiply by 7 to get 210 ( so you'd divide 210 by 7 which is 30). Multiply the other side by thirty as well to get the value of x

3*30 which is 90

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