Explanation:
Because we are told that she can spend $26 this month on movie and rentals, we can begin by subtracting the definite cost, the membership fee ($5).
So. 26-5÷ 21
Next we divide 21 by 1.25 in order to find out how many movies Mariassa can rent.
So. 21÷1.25= 16.8
Because we cannot rent a portion of a movie (0.8), we take that away and are left with 16 movies she can rent.