Question

I used 8 bags of sand for 12m squared . How much will I need for 15m squared?

Answer 1

12m divided by 8 bags = 1.5 bags per m

So 1.5 bags times 15m = 22.5 bags o'sand

Answer 2

12 divided by 8 = 1.5

15 divided by 1.5 = 10

the answer is 10