Speed trap

This task is about working out probabilities from a table.
This table shows the number of different types of vehicles caught by a speed camera in one month.
 
Vehicle Type
Frequency Caught
  Private car 500
  Taxi 200
  Bus 100
  Truck 200
  Total 1000

Question

a)  There is a 1 in 2 chance that the next vehicle to be caught will be a ...

    • private car

    • taxi

    • bus

    • truck

Question

b)  What is the chance that the next vehicle to be caught will be a taxi or a bus?

    • 13001300

    • 110110

    • 1515

    • 310310

    • 610610

Question

c)  What is the chance that the next vehicle to be caught will be a truck?

    • 12001200

    • 110110

    • 1515

    • 1414

    • 2525