Question

Micah is watching a TV program that is 2 hours long during the program there are six commercials that are each 90 sec. How many minutes long is the program without commercials?

Answer 1

111 minutes

Explanation:

step 1

Find out how long are the six commercial

Multiply the number of commercials by 90 seconds

so

`90(6)=540\ sec`

Convert to minutes

Remember that

`1\ min=60\ sec`

`540\ sec=540/60=9\ min`

step 2

Subtract the duration of six commercials from the duration of the program

Remember that

`1\ h=60\ min`

so

`2\ h=2(60)=120\ min`

therefore

`120-9=111\ min`