Question

find the speed 30km in 20 minutes​

Answer 1

Answer:

Firstly we should convert minutes in hours because there is no unit of speed in kilometre per minute to give unit as kilometre per hour.

So it can be converted as ( by dividing by 60)

$20minutes = \frac{20}{60} hrs \\ = \frac{1}{3} hrs$

As the distance given is 30 kilometre so speed can be calculated using formula

$Speed = \frac{Distance}{time}$

So,

$Speed = \frac{30}{ \frac{1}{3} } \\ = \frac{30 \times 3}{1}$

$= 90km /hr</p><p>$

So the speed will be 90 km / hour.

Answer 2

convert the time from minutes to hour for that..

Time 20/60= 1/3 hour...

distance. 30 km

speed= distance/ Time

3*30/1= 90 km/h

hope you get this ..