How many minutes does Shashank takes to run a distance of 4000 m if he runs at a speed of 20 kmph?

Options
- 12 min
- 14 min
- 16 min
- 18 min

CORRECT ANSWER : 12 min

Discussion Board
Time & Distance

D = 4000m
S = 20km/hr
So
S = 20000m/sec
T = 4000/20000 = 4/20 = 1/5
(1/5)×60sec= 12min

Ketan Gurav 07-26-2021 11:25 AM

Here we need to convert speed in meter/sec

here T=D/S
s = 20 km/h
= 20*5/18 = 50/9 m/s
T = 4000*9/50
= 720sec
Here it needs to be converted into hours
so, 720/60
T = 12 min

prachi kakade 07-9-2020 01:39 PM

Answer

S = 20kmph
20*5/18 = 50/9 m/sec
T = D/S = 4000*9/50 = 720 sec
In min = 720/60 = 12 min

Preethi 06-29-2020 08:20 AM

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