Get the app photo math it helps so much
1A
2D
3B
4C
5E
Hope this helps!
The 100th customer would be the first to receive both.
20×5=100
50×2=100
If his water to cement ratio is 20 to 30, this means that if he uses 20 liters of water, he'd use 30 liters of cement.
The total mixture would then be 20+30=50 liters.
and the water would be 20/50=0.4 or 40% of the total mixture.