A shopkeeper gives a full bottle of soft drink in return for five empty bottles. A guy has 77 empty bottles and he can use them to get full soft drink bottles.

How many filled bottles will he be able to collect?

(**4** votes, average: **4.50** out of 5)

A shopkeeper gives a full bottle of soft drink in return for five empty bottles. A guy has 77 empty bottles and he can use them to get full soft drink bottles.

How many filled bottles will he be able to collect?