Allison went for a hike. a guide told her that when she reached the giant oak tree she would have completed 80% of the hike. when allison reached the giant oak tree she had walked 16 kilometers.
#3: how many kilometers does allison have left in the hike?

4 kilometers.

Step-by-step explanation:

You need to analize the information provided in the exercise.

You know that:

Knowing this you can find the total kilometers of the hike (which is the 100% of the hike) with the following expression:

Let be "x" the amount of kilometers Allison has left in the hike. This can be found with the following subtraction:

what is the answer?