3 girls whose ages total 36. Sue is 1/3 Jill's age. Sue is 4 times as old as Jane. What are their individual ages?

Answer 1

sue = s

Jill = 3 s
Jane = (1/4) s

so
s + 3 s + s/4 = 36

4 s + s/4 = 36

16 s + s = 144
17 s = 144
s = 144/17
Jill = 3 s = 432/17
Jane = s/4 = 36/17