Train A and Train B are traveling in completely opposite directions. Train A is going 100 km per hour. Train B is going 200 km per hour. How long will it take them to be 900 km apart from each other?

Solution

Solution

time : 3

Solution steps

Translate the problem into an equation:

100 x + 200 x = 900

Solve for

x, 100 x + 200 x = 900 : x = 3

time : 3

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