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The speed of a car is 90 km in the first hour and 60 km in the second hour. What is the average speed of the car?
- A72 kmph
- B75 kmph
- C30 kmph
- D80 kmph
Correct answer: B
Discussion 1
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CCommunity
75 kmph
S = (90 + 60)/2 = 75 kmph
S = (90 + 60)/2 = 75 kmph