Susan bought a bike for $93.75. if the bike was originally $125, what was the percent of discount?

The discount is 25%

Step-by-step explanation:

Divide 93.75 by 125 = 75%

however, that is not the discount.

it is the difference of the 100 and the discount.

to find the discount, you do 100 - 75 = 25

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: