Anita is 3 times as old as her son Rahul.
In the equation $a = 3 r$ , with $a + r = 48$ (sum of ages),
use substitution to find Rahul's age (in years).

Question

Anita is 3 times as old as her son Rahul. In the equation a = 3r, with a + r = 48 (sum of ages), use substitution to find Rahul's age (in years).

Accepted Answer

12. Substitute a = 3r into a + r = 48: 3r + r = 48, 4r = 48, r = 12. Rahul is 12 years old.

Step-by-Step Solution