Search questions

A man goes to Chennai from Hyderabad at a speed of $24\mathrm{km}/\mathrm{hr}$ and returns to Hyderabad at speed of $40\mathrm{km}/\mathrm{hr}$, through same route. What is his average speed (in km/hr) of the entire journey?

A car runs for one hour with a speed 60 km per hour, for 2 hours with a speed 70 km per hour and for 5 hours with a speed 50 km per hour. What is the average speed of the car in km per hour?