A shoe store uses a 115% markup on cost. If they sell a pair of shoes for $85.49, how much did the shoes cost before the markup?

Given:

A shoe store uses a 115% markup on cost.

Selling price of pair of shoes = $85.49

To find:

The cost of shoes before markup.

Solution:

Let x be the cost of shoes before markup.

A shoe store uses a 115% markup on cost.

So, the selling price of the shoes is

Selling price of pair of shoes is $85.49.

Therefore, the cost of shoes before markup is $39.76.

d is the correct answer

step-by-step explanation:

x= 8 because 3x = 3 * 8, and 3*8 = 24

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft