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Algebra Level 3

A man has to travel a certain distance.WHEN HE TRAVELLED 40KM , he increases his speed by 2km/hr . If he had travelled with his increased speed during the whole of his journey, he would have arrived 40 min earlier : but if he had continued at his original speed he would have arrived 20min later .How far did he travel?


The answer is 60.

Arko Roychoudhury by arko roychoudhury , 20, India

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1 solution

Venture Hi
Mar 17, 2015

X(total distance)=40+(speed+2)*(t-40/speed) -equation 1 Speed=x/t+20 - equation 2 Speed +2=X/t-40 - equation 3

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