The task is to generate the correct answer for a given math problem.

[Q]: Problem: what is the range of all the roots of | x ^ 2 - 4 | = x ?
[A]: 3

[Q]: Problem: a person want to give his money of $ 1800 to his 3 children a , b , c in the ratio 2 : 3 : 4 . what is the b ' s share ?
[A]: $ 600

[Q]: Problem: a certain bus driver is paid a regular rate of $ 16 per hour for any number of hours that does not exceed 40 hours per week . for any overtime hours worked in excess of 40 hours per week , the bus driver is paid a rate that is 75 % higher than his regular rate . if last week the bus driver earned $ 1032 in total compensation , how many total hours did he work that week ?
[A]:
5