Question
Ahmad drove at an average speed of 71 km/h for the first 3 hours of the journey. He then increased his average speed by 7 km/h and drove for another 4 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

Ahmad drove at an average speed of 71 km/h for the first 3 hours of the journey. He then increased his average speed by 7 km/h and drove for another 4 hours until he reached his town. Find his average speed for the whole journey.