Question 1
15 years ago, the ratio of Deepa's age to Gabriel's age was 4:5. 30 years from now, the ratio will be 5:6. Find Deepa's present age.
Let Deepa's present age = x, Gabriel's present age = y
15 years ago: (x-15)/(y-15) = 4/5
30 years from now: (x+30)/(y+30) = 5/6
Solving these equations gives x = 60, y = 75
15 years ago: (x-15)/(y-15) = 4/5
30 years from now: (x+30)/(y+30) = 5/6
Solving these equations gives x = 60, y = 75