Question

How long will an athlete take to run a 1600m race if her speed is 36km per hour

Answer 1

Answer:

2.67 minutes

Step-by-step explanation:

given that,

her speed is 36 km/ hour

ke know that,

1 km=1000m, 1 hour= 60 minutes

so, 36 km=(36*1000)

=36000 m

so, 36000 m= 60 minutes

1600 m =60*1600/36000 minutes

. =2.67 minutes

Answer 2

Answer:

An athlete will take 2/45 hours = 2.67 minutes to run a 1600m race if her speed is 36 km per hour.

Step-by-step explanation:

We know that $speed=\frac{distance}{time}$

∵ distance = 1600m =$\frac{1600}{1000}=1.6 km$ and speed = 36 km per hour

∴ $speed=\frac{distance}{time}$

⇒  $time=\frac{distance}{speed}$

⇒ $time = \frac{1.6}{36}hour = \frac{2}{45}hour$

⇒ $time=\frac{2}{45}hour=.\frac{2}{45}X60 minute = 2.67 minute$

Therefore, an athlete will take 2.67 minute to run a 1600m race if her speed is 36km per hour.