A car covers a distance of 400km at a x km/hr speed. Had the speed been 12km/hr more, the time taken for the journey would have been 1hr 40mins less. Find original speed of car. i. The time taken by car in second case is: * 400/x 400/(x-12) 400/(x+12) None ii. If time taken is 1hr 40mins less, then: * 400/x- 400/(x+12)=1hr 40mins
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= Original speed of the car is 48 km/hr.
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