Ahmad's age is
34 his sister's age now. 40 years ago, his age was
14 that of his sister's. How old is Ahmad now?
| |
Ahmad |
Ahmad's sister |
Difference |
| Before |
1x1 =
1 u |
4x1 =
4 u |
3x1 =
3 u |
| Change |
+ 40 |
+ 40 |
|
| After |
3x3 =
9 u |
4x3 =
12 u |
1x3 =
3 u |
The difference in the age between Ahmad and Ahmad's sister remains unchanged. Make the difference in age the same. LCM of 3 and 1 is 3.
Increase in the age of Ahmad
= 9 u - 1 u
= 8 u
8 u = 40
1 u = 40 ÷ 8 = 5
Ahmad's age now
= 9 u
= 9 x 5
= 45
Answer(s): 45
