Question

john works from 9 a.m. to 1 p.m. on all days included in the set of days from monday to friday, exclusive. How many hours does John work per week?

Answer 1

20 hours

Explanation:

there are 4 hours between 9 a.m. to 1 p.m.,

and 5 days from monday to friday

4 x 5 = 20 hours