Question

Adam is going to make concerte He Is going to use 180kg of cement 375kg of sand 1090kg of stone Cement, sand, stones are sold in bags: 1 bag cement is 25kg 1 bag sand is 22.5kg 1 bag stone is 50kg Adam already has 8 bags of cement 19 bags of sand 29 bags of stones Work out what bags he needs to buy to make the concrete. Working must be shown

Answer 1

The answer is "90 kg stone ".

Explanation:

Adam's got:

`\to 8 * 25 = 200 \\\\\to 19 * 22.5 = 427.5 \\\\\to 20 * 50 = 1000 \\\\`

He's got enough sand and cement

The stone value:

`\to 1090-1000 = 90 \ kg`

He has 2 stone bags.