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A girl's age is now three-sevenths of what she will be four years from now.How old is she now?

 Jun 15, 2020
 #1
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Let g be girls age, then:

 

g = (3/7)*(g + 4)

 

Multiply by 7:

 

7g = 3(g + 4)

 

Can you take it from here?

 Jun 15, 2020

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