A total of 36 students were surveyed to determine the mood of transportation that they use to travel to school how many students travel to school on the bus

Taxi 4
Walk 10
Car 12
Train three
Bike 2

5 students travel to school on the bus.

(Total number of students surveyed - sum of students using other transportation methods) = 36 - (4+10+12+3+2) = 36 - 31 = 5 students use the bus.