Pawnee and Springfield are 420 miles apart. A train leaves Pawnee heading to Springfield at the same time a train leaves Springfield heading to Pawnee. One train is moving at a speed of 45 mph, and the other is moving 60 mph. How long will they travel before they meet?

Solution

Solution

time : 4

Solution steps

Translate the problem into an equation:

45 x + 60 x = 420

Solve for

x, 45 x + 60 x = 420 : x = 4

time : 4

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