Question

A cyclist travels for 30 min with an average speed of 10km/h. How far does she travel?

Answer 1

If she travels for 30 minutes, and goes at 10 kilometers per hour, she travels 5 kilometers.

An hour is 60 minutes. So, to get 30, divide by 2. Just halve it all, and you will get 10 / 2 = 5.

Answer 2

Answer:

5 km

Explanation:

Hello

speed is the relationship between a travel length and the time taken for it,and  the equation is given by

$V=\frac{displacement(d)}{time\ used\ for\ do\ that\ displacement(t)}\\\\ V=\frac{d}{t}$

Step 1

the speed and the time are known data, so we have to isolate the displacement

$v=\frac{d}{t}\\d=v*t$

Step 2

same units of time must be used, hence

using a rule of three let's convert 30 min into hours

$1\ hour = 60\ minutes\\x? hours= 30\ min\\\frac{1\ hour}{60\ minutes}=\frac{x}{30\ minutes } \\ x=\frac{1\ hour*30\ minutes}{60\ minutes}\\x=0.5\ hours$

Step 3

Put the values into the equation

$d=v*t\\d=10\frac{km}{h}* 0.5\ h\\\\ d=5 km$

he traveled 5 kilometers

Have a good day