A man goes from place A to B at a speed of 3 km/hr and returns from B A at a speed of 14 km/hr using the same route. The average speed (km/hr) for the whole journey is:
A man goes from place A to B at a speed of 3 km/hr and returns from B A at a speed of 14 km/hr using the same route. The average speed (km/hr) for the whole journey is:
एक व्यक्ति 3km/hrकी चाल से स्थान A से B तक जाता है और उसी मार्ग का उपयोग करते हुए 14km/hr की चाल से स्थान B से A तक वापस आ जाता है। पूरी यात्रा के लिए उसकी औसत चाल (km/hr में) ज्ञात कीजिए।
Detailed Solution & Logic
Correct Answer:
$4\frac{16}{17}$
✅ Simple Solution:
Average speed for equal distances:
$ \text{Average speed} = \frac{2xy}{x + y} $
Here $x = 3,; y = 14$
$= \frac{2 \times 3 \times 14}{3 + 14}$
$= \frac{84}{17}$
$= 4\frac{16}{17}$
Similar Practice Questions
Rachin travels a distance at 60 km/hr for 2 hours
Rachin travels a distance at 60 km/hr for 2 hours and 80 km at 40...
Two trains running towards each other on parallel
Two trains running towards each other on parallel tracks, at speeds of 45 km/hr and...
A train is moving at a uniform speed of 80 km/h. What distance will it cover in 30 minutes?
A train is moving at a uniform speed of 80 km/h. What distance will it...
A man driving a car at a speed of 99 km/hr crosses a bridge in 1.2 minutes. Find the length (in metres) of the bridge.
A man driving a car at a speed of 99 km/hr crosses a bridge in...
The speed of a stream is 9 km/h.
The speed of a stream is 9 km/h. A boat can go 56 km downstream...
A train travelling at 60 km/hr
A train travelling at 60 km/hr crosses another train travelling in the opposite direction at...
A train 282 m long takes 12 seconds to cross another train 248 m long coming from the opposite direction.
A train 282 m long takes 12 seconds to cross another train 248 m long...