Answer:
Step-by-step explanation:
Given that a group of x people rent a jeep for 80 dollars.
Since they share the amount equally we have
each person share =
When one person in the group decides not to go, each remaining person has to pay an extra 4 dollars.
i.e. now the share borne by each in the group would be
This is 4 dollars more than the original
Hence equation would be
This equation would be used to determine how many people are in the group.