John is 5 years older than Mary. In 10 years, twice John's age decreased by Mary's age is 35, and John's age will be twice Mary's current age. How do you find their ages now?
1 Answer
Sep 24, 2015
John is 20 and Mary is 15 now.
Explanation:
Let
Check:
Also in ten years John's age will be twice Mary's current age: