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?

    • \(1 \over 300\)

    • \(1 \over 10\)

    • \(1 \over 5\)

    • \(3 \over 10\)

    • \(6 \over 10\)

Question

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

    • \(1 \over 200\)

    • \(1 \over 10\)

    • \(1 \over 5\)

    • \(1 \over 4\)

    • \(2 \over 5\)