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פּוֹפּוּלָרִי 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?

פתרון

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 ?

פתרון

time : 2 \frac{4}{5}

צעדי פתרון

Translate the problem into an equation:

45 x + 55 x = 280

45 x + 55 x = 280, x

פתור בשביל:

x = \frac{14}{5}

הסב שבר מדומה למספר מעורב

time : 2 \frac{4}{5}

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