Marty spent 2 7/10 hours studying for a test. kim spent 3 1/4 hours studying for the same test. how much longer did kim study than marty?

You have to turn 3 1/4 into 3 5/20 and 2 7/10 into 2 14/20 then regroup the 3 and you get 2 25/20 and subtract that from 2 14/20 and you get 11/20

29. because you will divide each number of months by 12 to find the number of years. which would mean, 5, 12.5, 16, 45, 50, 72.5. which is crazy. anyhow, i think you find the median in the middle. and yea hope your test goes good