Question

28% of what number is 7?

Answer 1

hopefully it is 0.04 i am trying to help 

Answer 2

Cross Multiply


`(7)/(x)` =
`(28)/(100)`
28x = 100 · 7
28x = 700
28 28
x = 25

or you can set it up like this...

28% of what number is 7

1. Change 28% to .28
.28 of what number is 7

2. Of means multiply
.28 · what number is 7

3. what number is going to be a variable I will use x
.28 · x is 7

4. is means equal to
.28 · x = 7

Finally you can solve the equation

.28 · x = 7

divide both sides by .28
.28 · x =  7 
 .28 .28
x = 25