SOLUTION: Peter is 12 years old and his grandfather is 63. In how many years will Peter be a quarter of his grandfather's age? Please help with an equation. Thanks a lot!

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Question 189619: Peter is 12 years old and his grandfather is 63. In how many years will Peter be a quarter of his grandfather's age? Please help with an equation. Thanks a lot!
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let x= the number of years in which Peter will be
a quarter of his grandfather's age
Given:
12+%2B+x+=+%281%2F4%29%2A%2863+%2B+x%29
48+%2B+4x+=+63+%2B+x
3x+=+63+-+48
3x+=+15
x+=+5
In 5 years, Peter will be
a quarter of his grandfather's age
check:
12+%2B+x+=+%281%2F4%29%2A%2863+%2B+x%29
12+%2B+5+=+%281%2F4%29%2A%2863+%2B+5%29
17+=+%281%2F4%29%2A68
68+=+68
OK