SOLUTION: Andrew’s grandfather’s age is twelve times Andrew’s age. If Andrew’s grandfather was 55 years old when Andrew was born, how many years old is Andrew now?
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Question 247719: Andrew’s grandfather’s age is twelve times Andrew’s age. If Andrew’s grandfather was 55 years old when Andrew was born, how many years old is Andrew now? Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! Andrew’s grandfather’s age is twelve times Andrew’s age.
If Andrew’s grandfather was 55 years old when Andrew was born, how many years old is Andrew now?
:
Let x = Andrew's age now
then
12x = Grandpa's age now
:
It says,"Andrew’s grandfather was 55 years old when Andrew was born," therefore:
12x - 55 = Andrew's age now
So we can say
x = 12x - 55
55 = 12x - x
55 = 11x
x =
x = 5 yrs old is Andrew now
:
:
Check by finding Grandpa's age: 12 * 5 = 60 yrs ols
A 55 year age difference
