186k views
5 votes
Helppp please.

Megan is 5 years older than Sandy. If four years ago Megan was three years less than three times Sandy's age, how old is Sandy now?

User Chu
by
8.8k points

1 Answer

5 votes
the solution
m = s + 5
m - 4 = (3s) - 3
(s + 5) - 4 = 3s - 3
s + 1 = 3s - 3
s = 3s - 4
-2s = -4
s = 2
m = 7
Check this:

m - 4 = 3s - 3
7 - 4 = 3(2) - 3
3 = 6 - 3
3 = 3

So Sandy is 2 and Megan is 7.
User Evik James
by
9.0k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories