Problems on Ages Practice Test 1 with solutions

Let the present ages of Shami, Nammi and Pammi are 3x, 4x and 5x years respectively;
then, 3x + 4x + 5x = 48
⇒ 12x = 48
∴ x = 4
Hence, their present ages are 12, 16 and 20 years respectively.
So, required ratio = (12 + 8) : (16 + 8) : (20 + 8) = 20 : 24 : 28 = 5 : 6 : 7