Please I need 1 line explanation for each answer

Medro and Mariana have been doing really well financially and wanted to invest their money into something beneficial. So, they decided to open (M&M)'s Little Chef School in their coffee shop that graduates students with a basic chef degree in making healthy sandwiches. The healthy sandwich week course is 5 days long from Saturday to Wednesday. There are 4 teachers. The school operates 2 hours each day from Saturday to Wednesday. Each teacher is paid 7 KD/hr. The materials needed to teach each student will cost (M&M) 8 KD/student. They will charge 60 KD per student for the course. During the first week (Saturday to Wednesday) of opening the school, 24 students graduated. 20. Medro & Mariana found a better way to teach the students. As a result, they were able to increase the number of graduating students from 24 students in week one to 32 students in the second week. What was their productivity (students/week) growth rate equal to? (5 Points) a. 33.33% O b. 25% O c. 75% O d. none of the above