Mathematics: A mixture of concrete is made up of sand and cement in the ratio of 5:3.How many cubic centimeters of sand is needed to make 160 cubic centimeters of concrete mix?

A mixture of concrete is made up of sand and cement

s855753

10.07.2021

$100\ cm^3$

Step-by-step explanation:

Given

The ratio of mixture of sand and cement is 5:3

If the total volume of mixture is $160\ cm^3$

Suppose there is 5x and 3x cubic centimeter of sand and cement respectively i.e.

$\Rightarrow 5x+3x=160\\\Rightarrow 8x=160\\\Rightarrow x=20\ cm^3$

Sand $5x=5\times 20=100\ cm^3$

So, there is $100\ cm^3$ of sand in the mixture

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kira3039

08.10.2021

4.5 x 10 = 45

4.5 x 2 = 9

9 + 45 = 54

54 + 4.5 = 58.5

1 + 2 + 10 = 13 weeks

13.5 weeks = 3 months

2 months and 4 weeks

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