Question
Mary is 15 years older than her niece Katie. In 10 years Mary is two times as old as Katie. How old are Mary and Katie now?
How do I solve this (equation + work)
Thank you!
How do I solve this (equation + work)
Thank you!
Answers
Reiny
Katie's age -- x
Mary's age -- x+15
10 years from now:
Katie : x+10
Mary : x+15 + 10 = x + 25
"Mary is two times as old as Katie" ---> 2x+25 = 2(x+10)
should be easy to solve
Mary's age -- x+15
10 years from now:
Katie : x+10
Mary : x+15 + 10 = x + 25
"Mary is two times as old as Katie" ---> 2x+25 = 2(x+10)
should be easy to solve