The error to that problem is the person switched the x and y points, like in point A, it’s supposed to be (x,y) or (1,5). The person put the y in front of the x while writing the points.
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.
Answer:
5
Step-by-step explanation:
Hope this helps :)
The answer is A.
Reasoning:
Choice B says to subtract 1/5. However since 1/5 has a variable next to it, it would need to be divided not subtracted
