Question 1
The ratio of Indu's age to Chetan's age is 2:7. After 20 years, the ratio will become 3:10. Find Indu's present age.
Let Indu = 2k, Chetan = 7k
After 20 years: (2k+20)/(7k+20) = 3/10
Solving gives k = 9, so Indu = 18
After 20 years: (2k+20)/(7k+20) = 3/10
Solving gives k = 9, so Indu = 18