Question

shelly is 3 years older than Michele. four years ago the sum of their age was 67. find the age of each person now

Answer 1

hmm if 4 years ago the sum of their ages was 67, what is the sum of their ages now?

Answer 2

Shelly = 3 + M

67 = (Shelly + M)

Sub in Shelly.

67 = (3 + M + M)

67 = 3 + 2M
64 = 2M
32 = M
Remember, this was 4 years ago, so add 4

Michelle = 36

Now recall, that Shelly is actually 3 years OLDER than Michelle.

Shelly = 39.