Question

if mohini runs at a speed of 25km per hour. How long will she take to run 800metre race? ​

Answer 1

Step-by-step explanation:

$speed = \frac{distance}{time}$

$convert \: km \: into \: m = \frac{5}{18} \times 25$

=》6.94m

$6.94 = \frac{800}{t}$

T = 115.27min

Answer 2

Step-by-step explanation:

1 km = 100m

therefore, 25km = 25×100 = 2500 m

2500 m = 1 hour

therefore, 800 m = 800 ÷ 2500 = 0.32 seconds