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Популярное Word Problems >

Two trains leave stations 300 miles apart at the same time and travel toward each other. One train travels at 85 miles per hour while the other travels at 70 miles per hour. How long will it take for the two trains to meet?

Решение

Tw o t r ain s l e a v e s t a t i o n s 300 mi l es a p a r t a t t h e s am e t im e an d t r a v e l t o w a r d e a c h o t h er . O n e t r ain t r a v e l s a t 85 mi l es p er h o u r w hi l e t h e o t h er t r a v e l s a t 70 mi l es p er h o u r . Ho w l o n g w i ll i t t ak e f or t h e tw o t r ain s t o m ee t ?

Решение

time : 1 \frac{29}{31}

Шаги решения

Translate the problem into an equation:

85 x + 70 x = 300

Решите для

x, 85 x + 70 x = 300 : x = \frac{60}{31}

Преобразуйте неправильные дроби в смешанные числа

time : 1 \frac{29}{31}

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