Question

Hoshi walks 10 meters in 3 seconds. At this rate how long does it take her to walk 100 meters

Answer 1

It will take 30 minutes to walk 100 meters.

Answer 2

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