Caselet

The average age of Ravi, Sam, and Tina is 26 years. Ravi is twice as old as Tina, and Sam is 6 years older than Tina.

Question

What is Ravi's age?

Table built from the caselet

Solution

1. Total age = 3 x 26 = 78 years.
2. Let Tina's age be x. Then 4x + 6 = 78, so 4x = 72 and x = 18.
3. Ravi's age = 2 x 18 = 36 years.