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Averages
A person starts with the speed of u/1 kmph and returns with the speed of u/2 kmph, what is his average speed.
Read Solution (Total 6)
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- average speed =2xy/x+y
x=u/1 y=u/2
2*u/1*u/2/u/1+u/2=2u/3 - 12 years agoHelpfull: Yes(36) No(0)
- average speed===2/3u
- 12 years agoHelpfull: Yes(12) No(11)
- average speed =
(2*u/1*u/2)/(u/1+u/2)=2u/3 - 12 years agoHelpfull: Yes(6) No(1)
- average speed =2xy/x+y
x=u/1 y=u/2
[2*(u/1)*(u/2)]/[(u/1)+(u/2)]=2u/3 - 12 years agoHelpfull: Yes(6) No(1)
- formula is : 2xAxB/(A+B)
A=1
B=2
So, 2x1x2/(2+1)=4/3u
Answer is 4/3u - 12 years agoHelpfull: Yes(2) No(14)
- 3u/4.
(sum of two speed)/2 - 12 years agoHelpfull: Yes(2) No(19)
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