sonya spent 3/8 of her money and had $15 left. how much money did she orginally start with?

(1-3/8)X = 15

Solve for X.

To find out how much money Sonya originally started with, we can set up an equation based on the information given. Let's call the total amount of money Sonya originally had "x."

According to the problem, Sonya spent 3/8 of her money and had $15 left. This means that she spent 3/8 of x and had x - 3/8x = $15 left.

To solve this equation, we need to express 3/8 as a decimal. To do this, divide 3 by 8:

3 ÷ 8 = 0.375

Now, we can rewrite the equation:

x - 0.375x = $15

To solve for x, we can combine like terms:

0.625x = $15

Now, divide both sides of the equation by 0.625:

x = $15 ÷ 0.625

Calculating this division, we find:

x = $24

Therefore, Sonya originally started with $24.