Q4 of 168 Page 7

Represent the following situations in the form of the quadratic equation.

A train travels a distance of 300 km at a constant speed. If the speed of the train 'is increased by 5 km an hour. The journey would have taken two hours less.

Let ‘x’ be the speed of the train in km per hour.

∴ Time taken to cover 300 km =


[∵ .]


∴ Time taken when speed is increased by 5 =


∵ The journey would have taken two hours less when speed is decreased.



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