A shoreline is eroding at a rate of 1/3 foot per 3 months.how many feet are eroding per year
Mathematics · Middle School · Tue Nov 03 2020
Answered on
In order to find out how many feet are eroding per year, we can create a simple ratio based on the information that we have. We know that a year has 12 months. Lets call the amount of feet that we don't know X.
If per 3 months, erodes at a rate ⅓ foot
Then per 12 months, it will erode at a rate x foot.
Cross multiply in order to create the equation and find x. 3times x equal to 12 times ⅓.
3x=12*⅓
3x=12/ 3
Divide both sides with 3.
3x/3=12
x=12