The problem says that Hector receives his regular pay when he works 4 weeks, but he took a 1 week vacation. So, if in 4 weeks Hector receives the 100% of his regular pay, what percentage of that pay should he expect to receive with 3 weeks of work?
4 weeks-------100%
3 weeks-------x
We have:
x=(3x100)/4
x=75%
Then, the answer is:
Hector should expect to receive the 75% of his regular pay.