Passenger 2690

From city A to city B, the express train set off at an average speed of 100 km/h. At the same time, a passenger train departed from city B to city A. The trains met after 90 minutes. Calculate the average speed of a passenger train if the distance between the seats is 240 km.

Correct answer:

v =  60 km/h

Step-by-step explanation:

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