Todd begins piano practice at 4: 15 pm and ends at 5: 50 pm. how long does he practice.

Distance between 4:15 and 5:50 is 95 minute

So he practiced for 95 min 

Todd practiced for 1:45 minutes because of you subtracted 5:50 minus 4:15 it would equal 1:45 hope that helped

Well in order to lose a pound you would have to burn 1,500 calories. the more calories you burn the more weight you lose. in order to lose 2 pounds you would have to run 4 hours and 28 minutes.