Kamal is 60 years old and Karthi is 80 years old. How many years ago was the ratio of their ages 4 : 6?	Answers
A) 20 yrs	B) 30 yrs	C) 25 yrs	D) 40 yrs	E) 15 yrs
(60-x)/(80-x) = 4/6   6(60-x)=4(80-x)   x = 20   20 yrsNSWER 20 yrs
<result>A</result>
Kamal is 60 years old and Karthi is 80 years old. How many years ago was the ratio of their ages 4 : 6?