SOLUTION: Happy is four times as old as Grumpy. The sum of their age is 100. How old are Happy and Grumpy?

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Question 1177103: Happy is four times as old as Grumpy. The sum of their age is 100.
How old are Happy and Grumpy?
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!

let grumpy's age be x years
Happy's age will be 4x
4x+x =100
5x =100
x=20
Grumpy's age 20 years
Happy's age 4x = 80 years