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A car covers a distance of 715 km at a constant speed. If the speed of the car would have been 10 km/hr more, then it would have taken 2 hrs less to cover the same distance. What is the original speed of the car?

Option 1)

60 km/hr

Option 2)

50 km/hr

Option 3)

55 km/hr

Option 4)

65 km/hr

Option 5)

45 km/hr

Answers (1)

best_answer

Total Distance = 715

Suppose the Original Speed of Car = x

Then, new speed of car = x + 10

As per the given data,

$\frac{715}{x}-\frac{715}{x+10}= 2$

2x²+ 20x - 7150 = 0

x = 55 Km/hr

Posted by

rishi.raj

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