Answer:
X = 5
Step-by-step explanation:
I think there a problem with the question, If there is one less person in the group then the payment by each remaining person is must more than $2 than the previous, because the rent cost unchanged but the number of people in the group decreased.
Before, cost per person :
After cost per person: =
However, the payment by each remaining person is more than $2 than the previous, so
=
+ 2
<=> - 2x -40 = 0
<=> X = 5