A car covers a distance of 240 km at a uniform speed. If the speed had been 20 km/h more, it would have taken 2 hours less for the journey. Find the original speed. (answer in km/h)

Question

Accepted Answer

40. 240/s − 240/(s+20) = 2 → 4800 = 2s(s+20) → s² + 20s − 2400 = 0 → (s−40)(s+60) = 0 → s = 40 km/h.

A car covers a distance of 240 km at a uniform speed. If the speed had been 20 km/h more, it would have taken 2 hours less for the journey. Find the original speed. (answer in km/h)

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