Answer:
He worked 30 hours at a lower paying job.
Explanation:
First do 2 + 3 + 2 + 3 + 2 + 3 + 2 + 3 + 2 + 3 + 2 + 3 + 2 + 3 + 2 + 3 + 2 + 3 + 2 + 3 ( 20 + 30) to get 50
now remove all 2's to get 3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 (thats 30)
An there you go!