Question

3n+bu 3900
n+2y = 1300​

Answer 1

Answer:

Let the present age of Aftab = x           And, present age of his daughter is represented as = y           Seven years ago,           Aftab’s age = x – 7           Age of Aftab’s daughter = y – 7           According to the question,           (x – 7) = 7 (y – 7 )           x – 7 = 7 y – 49           x – 7y = – 49 + 7           x – 7y = – 42 …           (i)           x = 7y – 42           Putting y = 5, 6 and 7, we get           x = 7 × 5 – 42 = 35 – 42 = – 7           x = 7 × 6 – 42 = 42 – 42 = 0           x = 7 × 7 – 42 = 49 – 42 = 7