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인기 있는 Word Problems >

Two men who are traveling in opposite directions at the rate of 45 and 55 mph respectively started at the same time at the same place. In how many hours will they be 280 apart?

해법

Tw o m e n w h o a re t r a v e l in g in o pp os i t e d i rec t i o n s a t t h e r a t e o f 45 an d 55 m p h res p ec t i v e l y s t a r t e d a t t h e s am e t im e a t t h e s am e pl a ce . I n h o w man y h o u rs w i ll t h ey b e 280 a p a r t ?

해법

time : 2 \frac{4}{5}

솔루션 단계

Translate the problem into an equation:

45 x + 55 x = 280

x

해결 대상

, 45 x + 55 x = 280 : x = \frac{14}{5}

부적절한 분수를 혼합 숫자로 변환

time : 2 \frac{4}{5}

인기 있는 예

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