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A truck travels at 90 km/hr for the first $1\frac{1}{2}$1 hours. After that it travels at 70 km/hr. Find the same time taken by the truck to travel 310 kilometres.1). 2.5 hrs2). 3 hrs3). 3.5 hrs4). 4 hrs |
Answer» 4 HRS : - OPTION 4 | |