B and A
D and E
Your looking for two expressions that are equivalent.
which would be the same as equation
Rob spent 25% extra percent on his project than the had planned.
Let us assume total number of hours spent x hours.
Given that he spent an extra h hours on the project
So, we could say 25% of x is h.
0.25 x = h.
Dividing both sides by 0.25.
We get 0.25h/0.25 = h/0.25.
x = h/0.25.
Let us convert 0.25 into fractions.
0.25 = 25/100 = 1/4.
x = h/1/4 = 4h.
Therefore, Rob planned 4h hours.
He spent h hours extra.
So, he spent total 4h+h = 5h hours total.Therefore, 5h expressions could represent the number of hours Rob actually spent on the project.
The amount of time spent can be modeled as 1.25h
In order to do this, we need to take an extra .25h added to the h he planned on already spending. When we add these two together, we get 1.25h, which is the model for the sentence.
the answers is (h/0.25)1.25 and 5h for khan academy hope this helps