Fred completed 10 math problems. This is 40% of the number of math problems he has to do. How many math problems must he do?

25 math problems

Step-by-step explanation:

He completed 10 out of x, or the total he has to do.

10/x

We know that this equals 40%

10/x=40/100

Cross multiply to solve

40*x=100*10

40x=1000

Divide both sides by 40

x=25

He must do 25 math problems

what? ?

what type of question is thiss

step-by-step explanation:

(2,20) means that the 2 is 2 hours and 20 is 20$. so there both 20$ for 2 hours only the same price. like it says. so, the dunk tank and the bounce house are the same price (20$) for the same amount of time (2 hours).

hope i