haushila yadav


{ City } jagraon
< Country > india
* Profession * teacher
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Question { Wipro, 19854 }

A train travels a certain distance taking 7 hrs in forward
journey, during the return journey increased speed 12km/hr
takes the times 5 hrs.What is the distance traveled


Answer

x=speed
y=distance
according to the first situation ,
x=y/7...(1)
according to second situation,
x+12=y/5
or
5(x+12)=y
5x+60=y.....(2)
by subtracting equation 1&2
x=30
:the train will travel 30km

Is This Answer Correct ?    13 Yes 7 No