Stefanie swam 1/3 further in the morning.
4/5 - 7/15
12/15 - 7/15 = 5/15
5/15 = 1/3
The answer is B. They get a loan and pay each month, because then they have time to get the money to pay it back while still getting the car.
Well, for any prism, it is the lateral area + the area of two ends.