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| 1. |
a car travels first 30km with a speed of 60km/hr and the next 30km with a speed of 40km/hr.calculate the average speed |
| Answer» TION:For the first 30 KM travelled, speed = 60 km/h= 0.5 h-1 or 30 MIN. = 0.75 h-1 or 45 min = 75 min or 1.25 h. | |