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If A car covers half the distance at a speed of 60 kmh and the other half at 40 kmh.find the average speed of car?
The answer below is the classic error of using the arithmetic mean where the harmonic mean is appropriate.
Suppose the total distance is 2x km.
Half the distance = x km, is covered at 60 kmh. This takes x/60 hours.
The other half is covered at 40 kmh and this takes x/40 hours.
So total time taken = (x/60 + x/40).
Now, Average Speed = Total Distance/Total Time
= 2x/(x/60 + x/40) = 2/(1/60 + 1/40) = 2/(2/120 + 3/120) = 2/(5/120) = 2*120/5 = 48 kmh.
What else can I help you with?
A car covers half the distance at a speed of 60 kmh and other half 40kmh find average speed of car?
(60 + 40) ÷ 2 = 50 kmh
What is the average distance in light years of cancer's constellation to earth?
It doesn't make sense to talk about the distance to a constellation, or even about the average distance. A constellation is basically a direction in space. In other words, that's like asking "how far is North", or "what is the average distance to 'up'".It doesn't make sense to talk about the distance to a constellation, or even about the average distance. A constellation is basically a direction in space. In other words, that's like asking "how far is North", or "what is the average distance to 'up'".It doesn't make sense to talk about the distance to a constellation, or even about the average distance. A constellation is basically a direction in space. In other words, that's like asking "how far is North", or "what is the average distance to 'up'".It doesn't make sense to talk about the distance to a constellation, or even about the average distance. A constellation is basically a direction in space. In other words, that's like asking "how far is North", or "what is the average distance to 'up'".
If a batsman runs from one popping crease to other to score a run ' what is the distance he covers?
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