You find your watch gains 2 minutes in 6 hours. how much will it gain in three days

You have to set up a proportion for this question. First, you have to know how many hours are in 3 days. There are 72 hours in 3 days, so now you can set up your proportion. 2:6 and _:72. You need to find out what 72 divided by 6 is. it is 12, so now you must multiply 12 by 2, and get 24. So, if your watch has gained 2 minutes in 6 hours, than in 3 days, it will have gained 24 minutes.