Question

32 tonnes of a mixture of sand and gravel has 25% sand. How many tonnes of gravel are in it?

Answer 1

Mixture of Sand and gravel=32 tonnes
Sand is= 25% of it

$sand = 25\% \: of \: mixture \\ = 25\% \: of \: 32 \: tonnes \\ \frac{25}{100} \times 32 \\ = 8 \: tonnes$
Sand=8 tonnes
Gravel=Mixture-Sand
Gravel=32 tonnes-8 tonnes

Gravel=24 tonnes

Answer 2

Answer:

8 tonnes

Step-by-step explanation:

25 of 32

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