help on a word problem

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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 13th, 2015

Let Gladys age be G, Alyssa age be A and William age be W

A= 3+G

W= 2(3+G)

their total age is 89, Therefore we add them

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

G+3+G+6+2G=89

4G+9=89

4G=89-9

4G=80

G=80/4

G=20

Gladys (G) is 20 years old

May 13th, 2015

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May 13th, 2015
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May 13th, 2015
Jun 26th, 2017
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