331 students went on a field trip. Six buses were filled and 7 students traveled in cars. How many s

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331 students went on a field trip. Six buses were filled and 7 students traveled in cars. How many students were In bus?

Subtract the 7 students in cars, and we're left with:
331 - 7 = 324 students in buses.

324 students / 6 buses = 54 students in each bus.