Q89.
The professor was driving to his out-of-town laboratory at a consistent speed (not faster than 90
km/h)
At one moment the meter showed 16961 km of mileage. In exactly 2 hours the number on the
meter once again showed a number that reads the same in both directions.
At what speed (km/h) was the Professor driving?
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Answer:
The answer is 55 km/hr
Step-by-step explanation:
you see you need to see the km he travels in one hour and then add it to the current mileage the maximum distance travelled. The only number reading same left and right in that series will 17071 km therefore we can conclude that he travelled 17071 km and when you subtract you find that the professor has travelled a distance of 110 km this using the formula to find the speed will give you a value of 55 km/hr
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