Question

Cement, sand, aggregate, and water are used to make concrete, in the ratio: Cement : Sand : Aggregate : Water = 2:5:8:1 Bobbie wants to make 1.2m of concrete. How much aggregate will he need? a) 2.4m³ b) 4.8m³ c) 3.6m³ d) 3.6m³

Answer 1

To find the amount of aggregate Bobbie will need, use the given ratio and set up a proportion to solve for the unknown amount.

Step-by-step explanation:

To find the amount of aggregate Bobbie will need, we can use the given ratio. The ratio of aggregate to the total mixture is 8 parts out of 16 parts (2+5+8+1). Since we know that Bobbie wants to make 1.2m of concrete, we can set up the proportion:

8/16 = x/1.2

Solving for x, we get x = (8/16) * 1.2 = 0.6m³. Therefore, Bobbie will need 0.6m³ of aggregate.

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