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Popular Word Problems >

Two trains leave towns 700kilometers apart at the same time and travel toward each other. One train travels 11 kmh slower than the other. If they meet in 4hours. What is the rate of each train?

Solução

Tw o t r ain s l e a v e t o w n s 700 ki l o m e t ers 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 11 kmh s l o w er t han t h e o t h er . I f t h ey m ee t in 4 h o u rs . Wha t i s t h e r a t e o f e a c h t r ain ?

Solução

first trai n^{'} s speed : 82

second trai n^{'} s speed : 93

Passos da solução

Translate the problem into an equation:

x \cdot 4 + (x + 11) \cdot 4 = 700

Resolver para

x, x \cdot 4 + (x + 11) \cdot 4 = 700 : x = 82

Encontrar speed

first trai n^{'} s speed : 82

second trai n^{'} s speed : 93

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