mudit ' s age 16 years hence will be thrice his age 4 years ago . find mudit ' s present age ?
explanation : let mudit ' s present age be ' m ' years . m + 16 = 3 ( m - 4 ) = > 2 m = 28 = > m = 14 years . answer : a
divide(add(16, multiply(const_3, 4)), const_2)