Aunt Gillian is now 5 times as old as Joelle. 6 years later, Aunt will be 2 times as old as Joelle. How old will Aunt Gillian be 3 years from now?
|
Aunt Gillian |
Joelle |
Difference |
Before |
5 u |
1 u |
4 u |
Change |
+ 6 |
+ 6 |
|
After |
2x4 = 8 u |
1x4 = 4 u |
1x4 = 4 u |
The difference in the age between Aunt Gillian and Joelle remains unchanged. Make the difference in age the same. LCM of 1 and 4 is 4.
Increase in Aunt Gillian's age
= 8 u - 5 u
= 3 u
3 u = 6
1 u = 6 ÷ 3 = 2
Aunt Gillian's age 3 years from now
= 5 u + 3
= 10 + 3
= 13
Answer(s): 13