Answer:
the answer is A(4.5)
Step-by-step explanation:
y/6 = 6/8
y=9/2 = 4.5
There is no graph for Elevator B. I'm sorry if I'm mistaken.
Just subtract 20.35 from 100.8

if your bag weighs 100.8 kg and you scoop out 20.35 kg then weigh your bag it will be 80.45 bc u took out 20.35 kg of the cement to use. hope that explains it