Question
At 8.00 p.m., a black car and a purple 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 purple car took 25 minutes.
  1. Find the speed of the black car.
  2. Find the speed of the purple car.
  3. If the 2 cars travelled without any interval of rest, at what time would the 2 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 8.00 p.m., a black car and a purple 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 purple car took 25 minutes.
  1. Find the speed of the black car.
  2. Find the speed of the purple car.
  3. If the 2 cars travelled without any interval of rest, at what time would the 2 cars next meet again at the office?