Answer:
Last year Jules' contract was for 1200 hours.
Explanation:
This year Jules has a contract to work for 984 hours.
This is an 18% decrease on the hours on last year's contract.
Last year number: x
This years: 100 - 18 = 82% of last year, which is 984 hours. This means that:
Last year Jules' contract was for 1200 hours.