a new 5 mile nature trail is 125% of the length of the original trail.How long is the original trail?

5 = 1.25 x

x = 4

To find the length of the original trail, we can use the concept of proportions. Let's set up a proportion to solve for it.

Let x be the length of the original trail.

According to the information given, the new nature trail is 125% (or 1.25) of the length of the original trail. So, the length of the new trail is 1.25x.

Now, we can set up the following proportion:

1.25x / x = 5 miles / y

In the proportion, y represents the length of the new trail, which is given as 5 miles.

Simplifying the proportion, we have:

1.25x / x = 5 / y

To solve for x, we can cross-multiply:

1.25x * y = 5 * x

Now, substitute the given values:

1.25x * 5 = 5 * x

Multiply:

6.25x = 5x

Subtract 5x from both sides:

6.25x - 5x = 0

1.25x = 0

Divide both sides by 1.25:

x = 0

Therefore, the length of the original trail is 0 miles.