Question 665671
Let x be the number of years after which the grand mother will be three times her granddaughter's age.

Today the GM is 52 
after x years she will be 52+x

 Today G Daughter is 14 
after x years GD will be (14+x)

52+x= 3(14+x) is the equation

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52+x=42+3x

3x-x=10
2x=10
x= 5

m.ananth@hotmail.ca