SOLUTION: A girl is twice as tall as her doll. Her father is three feet taller than the girl. Their combined heights is 10 and one half feet. How tall is the doll,the girl, and the father?

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Question 112367This question is from textbook
: A girl is twice as tall as her doll. Her father is three feet taller than the girl. Their combined heights is 10 and one half feet. How tall is the doll,the girl, and the father? This question is from textbook

Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
Let g be the height of the girl.
g/2+g+g+3=21/2
g+2g+2g+6=21 multiply 2 times each side to eliminate fractions.
5g+6-6=21-6
5g=15
g=3
Check:
1.5+3+6=10.5 true
Ed