Adam and Tom are brothers. Adam is 8 years old and Tom is 12 years old. In how many years will their combined age be 44 years old?
At present, the two brothers have a combined age of 8 + 12 = <T>add(8, 12)=20 years old.
Therefore, 1 year means an increase in the sum of their ages by 1 * 2 = <T>multiply(1, 2)=2 years.
Adam and Tom need a total of 44 - 20 = <T>subtract(44, 20)=24 more years to be 44 years old together.
So both brothers will be 44 years old together after 24 / 2 = <T>divide(24, 2)=12.0 years.
