Question

Age math……….. help!!!!!!

Answer 1

Let k be Kaden's current age and s Sally's current age.

Right now, Kaden is 18 years older than Sally, so

k = s + 18

In 5 years, Kaden will be 3 times older than Sally, so that

k + 5 = 3 (s + 5)

Substitute the first equation into the second one to solve for s :

(s + 18) + 5 = 3 (s + 5)

s + 18 + 5 = 3s + 15

s + 23 = 3s + 15

3s - s = 23 - 15

2s = 8

s = 4