Question 1173484

the total of three sisters ages is 39. Dina is half as old as Michelle and 3 years younger than Juliette. how old are the sisters?
<pre>Let Dina's age be D
Then Michelle's, and Juliette's are, 2D and D + 3, respectively
We then get: D + 2D + D + 3 = 39
4D = 36
Dina, or {{{highlight_green(matrix(1,6, D, "=", 36/4, "=", 9, years-old))}}}
You should now be able to find Michelle's and Juliette's ages!