FREE Video Lesson Worth $20! Access 10000 Questions From P1 to P6! Access 300 Hours of Video Explanations! Video Tutorials to Tough PSLE Questions!
Primary 6 Problem Sums/Word Problems - Try FREE
- Attempting as Guest
- Attempt Mode: Attempt Single Question
From a point, a car and a lorry started moving in opposite directions along a straight road.
They were 400 km apart after having travelled for 4 h.
The average speed of the car was 45 km/h.
Find the average speed of the lorry.