The corporate team-building event will cost $36 if it has 18 attendees. How many attendees can there be, at most, if the budget for the corporate team-building event is $78?
Using a sort of cheat method!
For $78 the count of attendees is 39
Consider the attendance for $36 to be an attendance of I set
The count of sets for $78 is
So the count of attendees is
Using ratio but in fraction format (this is NOT a fraction)
Let the unknown count be
The ratio of the numbers in each case is the same. So we can write:
Multiply both sides by 78
What follows is the process that is behind cancelling out