Question
Tom drove at an average speed of 64 km/h for the first 2 hours of the journey. He then increased his average speed by 20 km/h and drove for another 3 hours until he reached his town. Find his average speed for the whole journey.
3 m

Click button first when a symbol is required. X

Tom drove at an average speed of 64 km/h for the first 2 hours of the journey. He then increased his average speed by 20 km/h and drove for another 3 hours until he reached his town. Find his average speed for the whole journey.