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 25 kg
1 bag sand 22.5 kg
1 bag stone 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 please.