Question

Find the number of paid hours worked from 8:01 a.m. to 4:03 p.m., assuming pay is for full half-hours.

Answer 1

Since it's only for full half hours, we have to find how many half-hours between 8:01AM and 4:03 PM. Notice that any number of full half hours after 8:01 will either end with 31 or 01. So we only have to consider the time from 8:01 to 4:01.

If we subtract one minute from either side, it's still the same so we can say the half hours went from 8:00 to 4:00.

How many hours are in this period?

Answer 2

????

Answer 3

Let's look at a clock.If we look at this, start at 8, and go clockwise until we get to 4, how many hours have we gone?