quiz questions

[Kool_SRG]

10 minutes ago, SonaParv_522 said:

A person sees a train passing over 3km long bridge. The length of the train is half that of bridge if the train clears the bridge in 4mins. What is the speed of the train ?

45 Kmph..

[Ara_Tenkai]

14 minutes ago, SonaParv_522 said:

A person sees a train passing over 3km long bridge. The length of the train is half that of bridge if the train clears the bridge in 4mins. What is the speed of the train ?

67.5Kmph

[SonaParv_522]

3 minutes ago, Ara_Tenkai said:

67.5Kmph

right answer!!!!

[Spartan]

1 minute ago, SonaParv_522 said:

right answer!!!!

uncle 66.6kmph kada... nenu vesina solution wrong aa aite 

 

length of the bridge = 3000m

length of train = 1500m

total distance covered on bridge = 3000 + 1500 = 4500m

time taken = 4min = 240sec

speed = distance/time = 4500/240 = 18.5 m/s = 66.6 kmph

[Kool_SRG]

[Kool_SRG]

7 minutes ago, Ara_Tenkai said:

67.5Kmph

Can you explain this...

[SonaParv_522]

9 minutes ago, Spartan said:

length of the bridge = 3000m

length of train = 1500m

total distance covered on bridge = 3000 + 1500 = 4500m

time taken = 4min = 240sec

speed = distance/time = 4500/240 = 18.5 m/s = 66.6 kmph

length = track length + train length which is 4.5km

time = 4min = 4*1/60hr

speed = distance/time

speed = 4.5/(4/60) km/hr = 67.5km/hr

[SeemaLekka]

vuu

[Spartan]

4 minutes ago, SonaParv_522 said:

length = track length + train length which is 4.5km

time = 4min = 4*1/60hr

speed = distance/time

speed = 4.5/(4/60) km/hr = 67.5km/hr

mari meters lo lekkedite teda kottindi enduku...  same numbers right only metric different. 

 

we multiply m/s with 18/5 to convert into kmph . ade vaada nenu.. 

[SonaParv_522]

what percent is 2min59seconds of an hour?

[Spartan]

2 minutes ago, SonaParv_522 said:

what percent is 2min59seconds of an hour?

29.3 %

[SonaParv_522]

12 minutes ago, Spartan said:

uncle 66.6kmph kada... nenu vesina solution wrong aa aite 

 

length of the bridge = 3000m

length of train = 1500m

total distance covered on bridge = 3000 + 1500 = 4500m

time taken = 4min = 240sec

speed = distance/time = 4500/240 = 18.5 m/s = 66.6 kmph

4500met = 4.5 km

240sec = 240/3600hrs

then do your math

[SonaParv_522]

2 minutes ago, Spartan said:

29.3 %

wrong answer

[SeemaLekka]

Just now, SonaParv_522 said:

wrong answer

4.97 

[Ara_Tenkai]

16 minutes ago, Spartan said:

uncle 66.6kmph kada... nenu vesina solution wrong aa aite 

 

length of the bridge = 3000m

length of train = 1500m

total distance covered on bridge = 3000 + 1500 = 4500m

time taken = 4min = 240sec

speed = distance/time = 4500/240 = 18.5 m/s = 66.6 kmph

4

u are right but 4500/240 is 18.75