Yoko will be 48 years old in 6 years' time. Now, Jaslyn's age is 23 of Yoko's age. What was Jaslyn's age when she was 7 years less than 75% of Yoko's age?
| |
Jaslyn |
Yoko |
Difference |
| Before |
3 p - 7 |
4 p |
1 p + 7 |
| Change 1 |
+ ? |
+ ? |
|
| After 1 (Now) |
2 u |
3 u |
1 u |
| Change 2 |
+ 6 |
+ 6 |
|
| After |
2 u + 6 |
48 |
|
Yoko's age in 6 years' time = 3 u + 6
3 u + 6 = 48
3 u = 48 - 6
3 u = 42
1 u = 42 ÷ 3 = 14
Difference between Yoko's age and Jaslyn's age
= 1 u
= 14
75% =
75100 =
34 Difference in Yoko's age and Jaslyn's age at first
= 4 p - (3 p - 7)
= 1 p + 7
The difference in age between Yoko and Jaslyn remains unchanged.
1 p + 7 = 14
1 p = 14 - 7 = 7
Jaslyn's age when she was 7 years less than 75% of Yoko's age
= 3 p - 7
= 3 x 7 - 7
= 21 - 7
= 14
Answer(s): 14
