Question 1
10 years ago, the ratio of Suraj's age to Vaibhav's age was 4:5. 20 years from now, the ratio will be 5:6. Find Suraj's present age.
Let Suraj's present age = x, Vaibhav's present age = y
10 years ago: (x-10)/(y-10) = 4/5
20 years from now: (x+20)/(y+20) = 5/6
Solving these equations gives x = 40, y = 50
10 years ago: (x-10)/(y-10) = 4/5
20 years from now: (x+20)/(y+20) = 5/6
Solving these equations gives x = 40, y = 50