Mr. John jogs for 1 hour 30 minutes in the morning every day. How much time (in hours) will he have spent jogging after two weeks?
Let's think step by step.
21
There are 60 minutes in an hour so 1 hour 30 minutes is equivalent to [1 + (30 / 60)] hours = 1.

5 hours.

There are 7 days in a week so he spends 1.

5 * 7 = 10.

5 hours jogging every week.

After 2 weeks he will have spent 2 * 10.

5 = 21 hours jogging.

.

The answer: 21