Question

Dry concrete can be made by mixing sand, gravel and cement in the ratio 1:3:5. If you want 1800 kg of dry concrete, how much of each will you need? Give your answers in kilograms (kg).​

Answer 1

200 kg of sand

600 kg of gravel

1000 kg of cement

Explanation:

1/9/1800=200

multiply 200 by:

1: 200

3:600

5:1000

200:600:100