Hoshi walks 10 meters in 3 seconds.

At this rate how long does it take her to walk 100 meters

It will take 30 minutes to walk 100 meters.

The answer is 30 minutes.

Here is why

10/100 3/x

10 times x equals 10x

100 times 3 equals 300

300 divided by 10 equals 30.

X represents how long it takes her to walk 100 meters.

What I used to solve the problem was the proportion

10/100 3/x