A company uses two vans to transport workers from a free parking lot to the workplace between 7:00 and 9:00 a. m. One van has 5 more seats than the other. The smaller van makes two trips every morning while the longer one makes only one trip. Two vans can transport 65 people, maximum.

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.

Difference means subtraction