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A boy goes to school at a speed of 6 km/h and returns to the village at a speed of 5 km/h. If he takes 2 hours and 45 minutes in all, what is the distance between the village and the school?1. 5.5 km2. 6.67 km3. 8.5 km4. 7.5 km |
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Answer» Correct Answer - Option 4 : 7.5 km Let d be the distance(km) b/w village and school. According to question, d/6 + d/5 = 2.75 ⇒ 11d/30 = 11/4 ⇒ d = 30/4 = 7.5 km |
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