There are 20 guests at a party. The host has 8 gallons of punch. He estimates that each guest will drink 2 cups of punch. If his estimate is correct, how much punch will be left over at the end of the party?
20 guests times 2 cups of punch each = 40 cups of punch drunk total.
Then take that off the 8 gallon original amount of punch
(according to google 8 gallons is 30.2833L)
Assuming that 1 cup = 236.6 mL,
then the estimate is
Now, the host has
That is equivalent to
Also, there are
In total, the guests will drink
If his estimate is correct, there will be
This is also equivalent to