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