Answer
3 walk, 4 ride bikes, 16 take the bus, and 7 ride in a car.
Work Step by Step
walk: $3/30 = .1$
$.1 * 360 = 36$ degrees
bike: $4/30 = .1333$
$.1333 * 360 = 48$ degrees
bus: $16/30 = .5333$
$.5333 * 360 = 192$ degrees
car: $7/30 = .2333$
$.2333 * 360 = 84$ degrees
