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प्रश्न
A car covers the first half of the distance between two places at 40 km/h and other half at 60 km/h. The average speed of the car is ______.
विकल्प
40 km/h
45 km/h
48 km/h
60 km/h
MCQ
रिक्त स्थान भरें
उत्तर
A car covers the first half of the distance between two places at 40 km/h and other half at 60 km/h. The average speed of the car is 48 km/h.
Explanation:
Average speed = `"Total distance travelled"/"Total time taken"`
= `"x"/"T"`
=`"x"/("x"/(2xx40)+"x"/(2xx60))`
= 48 km/h
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