need help with word problem

label Algebra
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Alyssa is 3 years older than Gladys. William is twice as old as Alyssa. Altogether their ages total 89. How old is Gladys?

May 18th, 2015

A = 3 + G

W = 2A

A+ G+ W = 89

3 + G + G + 2 (3+G) = 89

3+ 2G + 6 +  2G =89

9 + 4G = 89

4G = 89 -9

4G = 80

G = 80/4

      =20 years


Please let me know if you have any questions and best me if you are satisfactory.


May 18th, 2015

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May 18th, 2015
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