SOLUTION: The capacity of an elevator is either 20 childern or 15 adults. If 12 childern are currently in the elevator,how many adults can still get in?

Question 454510: The capacity of an elevator is either 20 childern or 15 adults. If 12 childern are currently in the elevator,how many adults can still get in?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
The capacity of an elevator is either 20 childern or 15 adults.
If 12 children are currently in the elevator, how many adults can still get in?
:
Let a = number of adults that can get in
Let 1 = a full elevator
+ = 1
multiply by 60 to clear the denominators, results
3(12) + 4a = 60
36 + 4a = 60
4a = 60 - 36
4a = 24
a =
a = 6 adults can get in with the 12 children (If they want to)
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