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人気のある Word Problems >

A plane can fly 1200 miles in the same time as it takes a car to go 400 miles. If the car travels 100 mph slower than the plane, find the speed of the plane.

解

A pl an e c an f l y 1200 mi l es in t h e s am e t im e a s i t t ak es a c a r t o g o 400 mi l es . I f t h e c a r t r a v e l s 100 m p h s l o w er t han t h e pl an e, f in d t h e s p ee d o f t h e pl an e .

解

plan e^{'} s speed : 150

解答ステップ

Translate the problem into an equation:

\frac{1200}{x} = \frac{400}{x - 100}

x

を解く

\frac{1200}{x} = \frac{400}{x - 100} : x = 150

plan e^{'} s speed : 150

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