Question

A group of 72 people travel to the beach for a clean-up day. Some of the people bring their own supplies.Write an equation for the number of people for whom supplies will be provided.

Answer 1

Answer:

p=-b+72

Step-by-step explanation:

The total number of people is the sum of the people who bring their own supplies, b, and the people who are given  supplies, p, so the total number of people is p+b. It is given that there are 72 people in total so p+b+72. Subtracting b on both sides to solve for p then gives p=-b+72.