Question

A suit is on sale for $120. this is 4/5 of the regular price. what is the regular price of the suit

Answer 1

The 120$ is 4/5 of its regual price (x)

so :

4/5 of x = 120

i.e:  4x/5 = 120

Solve for x:

x = 120*5/4 = 150$

That was its regular price.