First off, simplify 3 hours. One hour is equal to 60 minutes, so we get 180 minutes. Next we divide 180 by four. We can make this easier by dividing 180 by ten, and multiplying it by 10 after we do everything. 4 times 4 is 16, and then the remaining 2 divided by 4 is .5. We have 4.5, but now we need to multiply 4.5 by 10, and we get 45. The answer is 45.
