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受欢迎的 Word Problems >

Two cars leave the city at the same and travel in opposite directions. If one car travels at a rate of 40 kph and the other at 42 kph, how long will it take them to be 246 kilometers apart?

解答

Tw o c a rs l e a v e t h e c i t y a t t h e s am e an d t r a v e l in o pp os i t e d i rec t i o n s . I f o n e c a r t r a v e l s a t a r a t e o f 40 k p h an d t h e o t h er a t 42 k p h, h o w l o n g w i ll i t t ak e t h e m t o b e 246 ki l o m e t ers a p a r t ?

解答

time : 3

求解步骤

Translate the problem into an equation:

40 x + 42 x = 246

求解

x, 40 x + 42 x = 246 : x = 3

time : 3

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