SAT Math Multiple Choice Practice Question 350: Answer and Explanation
20. Six buses are to carry 200 students on a field trip. If each bus must have no more than 40 students and no fewer than 30 students, then what is the greatest number of buses that can have 40 students?
Correct Answer: E
E If each bus contained only the minimum number of students, the buses would accommodate students. But since you have 200 students to accommodate, you have 20 more students to place. To maximize the number of 40-student buses, place 10 more students in two of the buses. Therefore, a maximum of two buses can have 40 students.