Two girls ate dinner together.
They both ordered iced tea.
One girl drank them very fast and had finished five in the time it took the other to drink just one.
The girl who drank one died while the other survived.
All of the drinks were poisoned.
How is that possible?
Using only and all the numbers 3, 3, 7, 7, along with the arithmetic operations +,-,*, and /, can you come up with a calculation that gives the number 24? No decimal points allowed.
[For example, to get the number 14, we could do 3 * (7 - (7 / 3))]