Hi there! :)
<u>Answer:</u>
Charles runs at a rate of 200 meters per minute.
Step-by-step explanation:
First off, you need to know that <u>1 hour</u> is <u>equal</u> to <u>60 minutes</u>.
Let's start by calculating Charles' speed in kilometers per minute. Then we'll transform the kilometers into meters.
So, Charles runs at a rate of 12Km every 60 minutes and <u>you want to know how many Km he runs in 1 minute.</u>
In order to answer your question, you'll need to use the cross product method:
12 Km → 60 minutes
x Km → 1 minute
<u>(12 × 1)</u> ÷ 60 = x Km
12 × 1 = <u>12</u>
<u>12 ÷ 60</u> = x Km
12 ÷ 60 = <u>0.2</u>
<u>0.2 = x Km</u>
Now, you need to know that <u>1 km</u> is <u>equal</u> to <u>1000 meters</u>.
You'll need to use the cross product another time to transfor your speed in kilometers per minute into meters per minute:
1 Km = 1000 meters
0.2 Km = x meters
<u>(1000 × 0.2)</u> ÷ 1 = x meters
1000 × 0.2 = <u>200</u>
<u>200 ÷ 1</u> = x meters
200 ÷ 1 = <u>200</u>
<u>200 = x meters</u>
There you go! I really hope this helped, if there's anything just let me know! :)