### Home > AC > Chapter 4 > Lesson 4.2.3 > Problem4-94

4-94.

MORE OR LESS

Judy has $20$ and is saving at a rate of $6$ per week. Ida has $172$ and is spending at a rate of $4$ per week. After how many weeks will each have the same amount of money?

1. Write an equation using $x$ and $y$ for Judy and Ida. What does $x$ represent? What does $y$ represent?

$x$ = the number of weeks
$y$ = the amount of money

Judy: $y = 20 + 6x$
Ida: $y = 172 − 4x$

1. Solve this problem using any method you choose.

Try using the Equal Values Method.