Akshil drive his car with speed of 20 km / h while going to his college, When he returned to his home along the same route, the speed of the car is 30 km /h . Calculate the average speed of the car during the entire trip?
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1
Answer:
A line that intersects a circle in exactly one point is called a tangent and the point where the intersection occurs is called the point of tangency. The tangent is always perpendicular to the radius drawn to the point of tangency. A secant is a line that intersects a circle in exactly two points.
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Answer:
24km/h
Explanation:
Distance while going and coming=x
Time to reach= X/20
time to return =X/30
Average speed=Total distance / Total Time
=(X+X)/(X/20+X/30)
=2X/(50X/600)
=2x/(5x/60)
On solving we get 24 km/h
So average speed = 24km/h... Don't do average of two speeds answer won't be correct. Thank you
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