Question

"James is making concrete using cement, sand and grave, in the ratio 1:2:3. James has:
63kg cement
112kg sand
210kg gravel

What is the max amount of concrete James can make?"

i wrote down the answer, but have totally forgotten how to get there!! i would be grateful for some help :))

Answer 1

210 kg gravel needs 70 kg cement, too much gravel
112 kg sand needs 56 kg cement, too much cement
The 112 sand is the limiter
so
56 kg cement
112 kg sand
168 kg gravel (3*56)
56 + 112 + 168 = total concrete

Answer 2

tysmm!

Answer 3

I don't get it