PLEASE HELP I WILL GIVE BRAINLUSET YO BEST EXPLANATION. THE ANSWER IS 120 km/h GIVE PROPER EXPLANATION A car completes a journey at an average speed of 40 km/h.
At what speed must it travel on the return journey if the average
speed for the complete journey (out and back) is 60 km/h?

Pyotr tchaikovsky sporting goods operates on a 45% overhead based on the selling price, which results in an overhead of $65.34 on the newest version of an air hockey game set. if the air hockey game set costs pyotr tchaikovsky sports $49.32, find the selling price, the markup, and the net profit.