The fourth and fifth grade students at Franklin Elementary are going on a field trip to the zoo. There are 22 fourth graders and 38 fifth graders on each bus headed to the zoo. There are 6 buses in all. This equation can be used to find the total number of students on the field trip.
x = (22 + 38)6
Using this equation, how many Franklin Elementary students were on the trip?
A) 330
B) 360
C) 630
D) 660