While watching television from 7 PM to 8 PM you count 20 commercials each 30 seconds long. What nearest percent of the hour is taken by the commercials?

While watching television from 7 PM to 8 PM you count 20 commercials each 30 seconds long. What nearest percent of the hour is taken by the commercials?

Explanation

Total time = 1 hour = 60 minutes

Commercials duration = 20 * 30 seconds

= 600 seconds

= 10 minutes

Percentage of hour taken by commercials = (10/60) * 100

= 16.67%

Nearest percent = 17%