In 8 year Mac's grandma will be twice as old as she was 29 years ago. How old will Mac's grandmother be in 4 years

Guest Jan 25, 2019

#1**+1 **

In 8 years Mac's grandma will be twice as old as she was 29 years ago. How old will Mac's grandmother be in 4 years

Let her age now = A

29 years ago her age = A - 29

And in 8 years, her age will be A + 8

So...we know that

2 (A - 29) = A + 8 simplify

2A - 58 = A + 8 add 58 to both sides, subtract A from both sides

A = 66 this is her age now

So....in 4 years, she will be 70

CPhill Jan 25, 2019