SOLUTION: A mother is 21 years older than her 5 years son.After how many years the son will bw 1/3 of his mother

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Question 407209: A mother is 21 years older than her 5 years son.After how many years the son will bw 1/3 of his mother
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
A mother is 21 years older than her 5 years son.
After how many years the son will be 1/3 of his mother
:
Let y = no. of years for this to be true
:
y + 5 = 1%2F3(y+26)
Multiply both sides by 3
3(y+5) = y + 26
3y + 15 = y + 26
3y - y = 26 - 15
2y = 11
y = 11%2F2
y = 5.5 yrs, these problems usually have integer solutions, but there it is!