The sum of the ages of Yogesh, Prakash and sameer is 93 years. 10 years ago the ratio of their ages was 2 : 3 : 4. What is the present age of sameer?

Let the respective ages of Yogesh, Prakash, and Sameer 10 years's ago be 2x, 3x and 4 x years.
∴ Present age of Yogesh = (2x + 10 ) years
∴ Present age of Prakash = (3x + 10 ) years
∴ Present age of sameer = (4x + 10) years
According to question,
(2x + 10) + (3x + 10) + (4x + 10 ) = 93
⇒ 9x + 30 = 93
⇒ 9x = 63
∴ x = 7
∴ Present age of Sameer = 4x + 10 = 28 + 10 = 38 years .