SOLUTION: Kurt is 12 years younger than MARK. When Mark's age is increased by 20% and Kurts age is increased by 25%, the sum of their ages is 83. What's Kurt's age?

Question 806055: Kurt is 12 years younger than MARK. When Mark's age is increased by 20% and Kurts age is increased by 25%, the sum of their ages is 83. What's Kurt's age?
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39620) (Show Source): You can put this solution on YOUR website!
K and M, their present ages.

.
.
Substituting for K,

Simply solve first for M and then use the result to get K.
Answer by MathTherapy(10552) (Show Source): You can put this solution on YOUR website!

Kurt is 12 years younger than MARK. When Mark's age is increased by 20% and Kurts age is increased by 25%, the sum of their ages is 83. What's Kurt's age?

Kurt's age:

You can do the check!!

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