Question

Five year ago 'A' and 'B' have ratio of age in 8:3 After 7 years, their age are in the ratio 9:4. Find the present age.

Answer 1

Answer:

Suppose that the present ages of A and B are 8x yrs and 3x yrs.

Then, (8x  + 7) : (3x + 7) = 9 : 4

⇒ cross multiplication

⇒ 32x + 28 = 27x + 63

⇒ 5x=35

⇒ x = 7

Now, present age of A = 8 × 7yrs = 56yrs

Present age of  B = 3 × 7yrs = 21yrs

Step-by-step explanation: