Jake spent 3/8 of his money on a book and 1/2 of what was left on a magazine. He now has $6.25. How much money did he start with?

Let x = money to start

5/8x - 1/2(5/8x) = 6.25

Solve for x.

if he spent 1/2 of what was left on a magazine then he had 12.50 before he bought the magazine. Maybe you could use this as a starting point.

To solve this problem, we need to work backwards. Let's start by finding out how much money Jake had left after buying the magazine.

We know that Jake spent 3/8 of his money on a book. This means he had 1 - (3/8) = (8/8) - (3/8) = 5/8 of his money left after buying the book.

Next, we know that Jake spent 1/2 of the remaining money on a magazine. So, he had (5/8) * (1/2) = 5/16 of his money left after buying the magazine.

Since we are given that he now has $6.25, we can set up the equation (5/16) * x = 6.25, where x represents the amount of money Jake started with.

To solve for x, we can multiply both sides of the equation by (16/5):

((5/16) * x) * (16/5) = 6.25 * (16/5)
x = (6.25 * 16) / 5
x = 100 / 5
x = 20

Therefore, Jake started with $20.