A train departed from the station at a speed of 70 km / h. Two hours later, another train departed

| May 3, 2021 | education

A train departed from the station at a speed of 70 km / h. Two hours later, another train departed in the same direction at a speed of 90 km / h. What is the distance between trains 3 hours after the departure of the second train?

1) Find out how long the first train was on the road: 2 + 3 = 5 (h);

2) Let’s determine what distance the first train covered from the moment it started moving (in 5 hours): 70 ∙ 5 = 350 (km);

3) Find the distance traveled by the second train (in 3 hours): 90 ∙ 3 = 270 (km);

4) Since 350 km ˃ 270 km, we calculate the distance that will be between trains 3 hours after the departure of the second train: 350 – 270 = 80 (km).

Answer: there will be a distance of 80 km between trains 3 hours after the departure of the second train.



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