Question

Sarah has made 30dresses, and she plans to make 3more dresses per month. Her sister , Anna has 40dresses and is planning on giving away 2 dresses per month

After how many months will Sarah and Anna have the same number of dresses​

Answer 1

2 months

Explanation:

you can set up equations for each sister:

(Sarah) y = 3x + 30

(Anna) y = -2x + 40

you can graph them to find where they intersect (2,36) or:

you can set them equal to each other like the following:

3x + 30 = -2x + 40

5x = 10

x = 2