The ratio of George's age to Xavier's age is 5 : 1. Last year, their average age was 23. How old will Xavier be in 5 years' time?
| |
George |
Xavier |
Total |
| Before |
5 u - 1 |
1 u - 1 |
46 |
| Change |
+ 1 |
+ 1 |
|
| After |
5 u |
1 u |
48 |
Total age of George and Xavier this year
= 5 u + 1 u
= 6 u
Total age of George and Xavier this year
= 2 x 23 + 1 + 1
= 46 + 2
= 48
6 u = 48
1 u = 48 ÷ 6 = 8
Xavier's age in 5 years' time
= 1 u + 5
= 1 x 8 + 5
= 8 + 5
= 13
Answer(s): 13
