Answer :
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
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