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Popular Word Problems >

Train A and Train B are traveling in completely opposite directions. Train A is going 100 km per hour. Train B is going 200 km per hour. How long will it take them to be 900 km apart from each other?

Solution

T r ain A an d T r ain B a re t r a v e l in g in co m pl e t e l y o pp os i t e d i rec t i o n s . T r ain A i s g o in g 100 km p er h o u r . T r ain B i s g o in g 200 km p er h o u r . Ho w l o n g w i ll i t t ak e t h e m t o b e 900 km a p a r t f ro m e a c h o t h er ?

Solution

time : 3

Solution steps

Translate the problem into an equation:

100 x + 200 x = 900

Solve for

x, 100 x + 200 x = 900 : x = 3

time : 3

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