Problema Solution
John is 22. He asks his dad how old he is. His dad says ” I am 22 plus half my age.” How old is dad? (Show working out).
Answer provided by our tutors
let dad's age be a.
22 plus half is age is
22 + (1/2)a
this is his age, so
a = 22 + (1/2)a subtract (1/2)a from both sides
(1/2)a = 22 multiply both sides by 2
a = 44
Therefore, dad is 44 years old.