Mark and Peter dug ponds in their backyards. Mark’s pond is 4 feet deeper than 3 times Peter’s pond. If Mark’s pond is 19 feet deep, what is the depth of Peter’s pond?
Step-by-step reasoning process below:
5
Let’s use p for the number of feet in Mark’s pond.

3 * p + 4 = 19.

3 * p = 19 - 4 = 15.

3p = 15.

p = 5.

.

Thus, the answer is 5