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?
There are 60 minutes in an hour so 1 hour 30 minutes is equivalent to [1 + (30/60)] hours = <<1.5=1.5>>1.5 hours
There are 7 days in a week so he spends 1.5*7 = <<7*1.5=10.5>>10.5 hours jogging every week
After 2 weeks he will have spent 2*10.5 = <<2*10.5=21>>21 hours jogging.
#### 21