Linda can bicycle 48 miles in the same time as it takes her to walk 12 miles. She can ride 9 mph faster than she can walk. How fast can she walk? Using r r as your variable to represent the rate at which she walks, write an equation using the information as it is given above that can be used to solve this problem.

Step-by-step explanation:

Let r represent Linda's walking rate.                      

We have been given that Linda can ride 9 mph faster than she can walk, so Linda's bike riding rate would be miles per hour.

We have been given that Linda can bicycle 48 miles in the same time as it takes her to walk 12 miles.

Since both times are equal, so we will get:

Therefore, the equation can be used to solve the rates for given problem.

Cross multiply:

Therefore, Linda's walking at a rate of 3 miles per hour.

Linda's bike riding rate would be miles per hour.

Therefore, Linda's riding the bike at a rate of 12 miles per hour.