An express train covers a fixed distance in 40 minutes at an average speed of 200 km/h. Due to construction work, it needs to be diverted, increasing the distance by 25%. If the train needs to arrive at its destination on time (in 40 minutes), what should its new average speed be in km/h?

उत्तर देखें और व्याख्या

उत्तर: (A) 250 km/h

व्याख्या

Distance +25% in the same time means speed +25%: 200 × 1.25 = 250 km/h.