Each bottle costs seven dollars. Two of them would cost $14 and three would cost $21. Buying three bottles, the amount is $21 which exceeds $16. Therefore, a $5 discount will be given. Subtracting $5 from the $21 will give $16. You have just enough amount to buy THREE bottles of olive oil.
Box of Popcorn: $3.00
Drink: $2.00
I might be wrong, but hopefully that helped! :)
In an hour, 80 people could ride the ferris wheel. So, that means in 3 hours 240 people could ride it.