he spent 27 now he has none, so if you add back how much he spent to what he has then you have what he had, which is 27
This is what's called a unit rate problem.
someone is going at 65 miles per hour, and you must find the distance in feet in 22 minutes. I think I know what chart you're talking about. I'm going to try to write it here, I don't know if it will appear the way I want it to
65 miles | 1 hour | 5280 feet | ----------------------------------------------- hour | 60 minutes| Mile| Now multiply the fraction out. Anytime a unit appears on both the top and bottom, it cancels, so miles and yours cancel. You end up with 343200 feet/ 60 minutes (all I did was multiply 65 by 5280 and add the remaining units and the denominator. The easiest way to get to your final answer is get the number of feet in one minute, so divide 343200 by 60 and you get 5720 feet/ min. To get the final answer, all you now have to do is multiply by 22 minutes to get 125840 feet.
13.) - 1/2
14.) 1 1/3 (4/3)
15.) - 3
