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Two airplanes leave Chicago's Midway airport at the same time, traveling in opposite directions. One travels 25 miles per hour faster than the other. After 2 hours, they are 490 miles apart. find the speed of the faster airplane.

Solution

Solution

second plan e^{'} s speed : 110

Solution steps

Translate the problem into an equation:

(x + 25) \cdot 2 + x \cdot 2 = 490

Solve for

x, (x + 25) \cdot 2 + x \cdot 2 = 490 : x = 110

second plan e^{'} s speed : 110

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