Question 329026
Bird Watchers Club were going to pay $18 each to go on an outing.
 Shortly before leaving, 5 new members joined.
 With everybody going, this reduced everybody's expense by $2.25.
 How many members are now.
:
Let x = no. of members now
then
(x-5) = original no. of members
:
Final amt: 18 - 2.25 = $15.75
:
total cost remains the same therefore:
18(x-5) = 15.75x
:
18x - 90 = 15.75x
:
18x - 15.75x = 90
:
2.25x = 90
:
x = 40 members now
:
:
Check solution by finding the actual total cost
40 * 15.75 = 630
35 * 18 = 630, confirms our solution of x=40