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פּוֹפּוּלָרִי Word Problems >

Two jets leave an air base at the same time and travel in opposite directions. One jet travels 84 miles per hour faster than the other. If the two jets are13,410 miles apart after 9 hours, what is the rate of each jet?

פתרון

Tw o j e t s l e a v e an ai r ba se a t t h e s am e t im e an d t r a v e l in o pp os i t e d i rec t i o n s . O n e j e t t r a v e l s 84 mi l es p er h o u r f a s t er t han t h e o t h er . I f t h e tw o j e t s a re 13, 410 mi l es a p a r t a f t er 9 h o u rs, w ha t i s t h e r a t e o f e a c h j e t ?

פתרון

first je t^{'} s speed : 787

second je t^{'} s speed : 703

צעדי פתרון

Translate the problem into an equation:

x \cdot 9 + (x - 84) \cdot 9 = 13410

x \cdot 9 + (x - 84) \cdot 9 = 13410, x

פתור בשביל:

x = 787

speed מצא את

first je t^{'} s speed : 787

second je t^{'} s speed : 703

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