Question

Subtract 2 hours, 20 minutes from 4 hours, 10 minutes.

2 hours, 10 minutes
1 hour, 50 minutes
1 hour, 30 minutes
1 hour, 10 minutes

Answer 1

So, Lets turn these into Minutes to make this easier.

2 hrs, 20 min would be 140 min.
4 hrs, 10 min would be 250 min.

Now subtract 140 from 250.

250 - 140 = 110

So, 1 hr and 50 min. :)

Answer 2

Easy  1 hour and 50 minutes hope this helps