Question
At 5.00 p.m., a black car and a green car left the office and travelled at average speeds in opposite directions round a 40-km route. The black car took 20 minutes to complete each round while the green car took 40 minutes.
  1. Find the speed of the black car.
  2. Find the speed of the green car.
  3. If the two cars travelled without any interval of rest, at what time would the two cars next meet again at the office?
3 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

(c)

Click button first when a symbol is required. X

At 5.00 p.m., a black car and a green car left the office and travelled at average speeds in opposite directions round a 40-km route. The black car took 20 minutes to complete each round while the green car took 40 minutes.
  1. Find the speed of the black car.
  2. Find the speed of the green car.
  3. If the two cars travelled without any interval of rest, at what time would the two cars next meet again at the office?