Question

Mr green makes some compost he mixes soil, manure and leaf mould in the ratio 3:1:2 mr greenmakes 72 literes of the compost. How many litres of soil does he use?

Answer 1

`36\ liters\ of\ soil`

Explanation:

we know that

The ratio of soil, manure and leaf mould is
`3:1:2`

That means

For every 6 liters of the compost, he use 3 liters of soil

so by proportion

Find how many liters of soil does he use for 72 liters of compost

`(3)/(6)=(x)/(72)\\ \\x=3*72/6\\ \\x=36\ liters\ of\ soil`