The ages of Misha and Kamal are in the ratio of 4 : 3 respectively. After 9 years the ratio of their ages will be 7 : 6. What is the difference in their present ages?
Given:
Present age ratio of Misha and Kamal = 4 : 3
After 9 years, age ratio = 7 : 6
Solution:
Let present ages be 4x and 3x.
Then after 9 years:
6(4x + 9) = 7(3x + 9)
24x + 54 = 21x + 63
3x = 9
x = 3
Misha’s age = 4x = 12 years
Kamal’s age = 3x = 9 years
Difference = 12 - 9 = 3 years
Alternate Solution:
ratio difference is always equal.
so , 7 - 4 = 3
3 unit = 9
1 unit = 3
Difference b/w age of Mishra and Kunal
= 4 - 3 = 1 unit
1 unit = 3 years
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