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February 28, 2015

February 28, 2015

Posted by **bev** on Tuesday, October 27, 2009 at 7:57pm.

Dina is 1/2 as old as Michelle and 3 years younger than Juliettte.

How old are the sisters ?

- Algebra -
**bobpursley**, Tuesday, October 27, 2009 at 8:00pmD+M+J=39

D=1/2 M

D=J+3

and, M=2D

J=D-3

intothe first equation

D+2D+D-3=39

4d=36

you take if from here.

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