*** Don't fall in the trap of just averaging the 2 speeds. What is its average speed for the entire trip? ![]() ![]() Say, a car travels at S1 mph on a trip and at S2 mph on return trip. Lets derive the genral formula first and see how it applies it to couple of examples. ![]() In problems that ask you to calculate total average speed, given the speed for onward and return trip, you could apply a formula or a neat trick to get to the answer faster.
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