Aunt Sarah is now 4 times as old as Jaslyn. 10 years later, Aunt will be 2 times as old as Jaslyn. How old will Aunt Sarah be 5 years from now?
| |
Aunt Sarah |
Jaslyn |
Difference |
| Before |
4 u |
1 u |
3 u |
| Change |
+ 10 |
+ 10 |
|
| After |
2x3 =
6 u |
1x3 =
3 u |
1x3 =
3 u |
The difference in the age between Aunt Sarah and Jaslyn remains unchanged. Make the difference in age the same. LCM of 1 and 3 is 3.
Increase in Aunt Sarah's age
= 6 u - 4 u
= 2 u
2 u = 10
1 u = 10 ÷ 2 = 5
Aunt Sarah's age 5 years from now
= 4 u + 5
= 20 + 5
= 25
Answer(s): 25
