Problema Solution
At her birthday party, Sam is serving a slice of cake to each attendee. If each attendee receives 2 slices, there will be 20 slices left. If 5 attendees do not receive any slices and the rest receive 5 slices each, there will be no cake left. How many attendees were at the party?
Answer provided by our tutors
Let 'x' represent the number of attendees.
If each attendee receives 2 slices, there will be 20 slices left. If 5 attendees do not receive any slices and the rest receive 5 slices each, there will be no cake left.
2x + 20 = (x - 5)*5
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x = 15 attendees
There were 15 attendees at the party.