Question

A program began at 6:30 P.M. and ended at 7:00 P.M. There were two 4.5-minute commercial breaks. How long was the program itself?

Answer 1

21 minutes

Explanation:

30-9-21 minutes of program

Answer 2

The total length of the commercial breaks is 4.5 minutes x 2 = 9 minutes.

So the length of the program itself is 7:00 P.M. - 6:30 P.M. - 9 minutes = 30 minutes - 9 minutes = 21 minutes.