A car travels a constant speed of 60 m/hr in a straight line, then continues in the same direction at constant speed x. The average speed for the entire trip is 30 m/hr. What is the speed of x?

The time to cover the first part is given by:



The time to cover the second part is given by:



The average speed is given by:



Well, there is not enough information, or I'm too tired to see what I'm missing...