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Q On a 60 km straight road, a bus travels the first 40 km with a uniform speed of 30 kmh-1. How fast must the bus travel the next 20 km so as to have average speed of 45 kmh-1 for the entire trip? |
| Answer» Q On a 60 km straight road, a bus travels the first 40 km with a uniform speed of 30 kmh-1. How fast must the bus travel the next 20 km so as to have average speed of 45 kmh-1 for the entire trip? | |