Countable And Uncountable

Riski : Akbar, i want to buy some fruits , would you accompany me to the store ?
Akbar : Of course, no problem

On the way

Akbar : Riski, i am very thirsty, i want to buy a bottle of water,
Riski : Oke, we will meet at the store
Akbar : Sure

At the store

Riski : Sir, i want to buy 2 kilo of oranges, how much is it ?
Sakti : The sum is 2.5 dollar sir, wait for a moment
Riski : Oh , i forgot my wallet.
Akbar : Riski , here .... two bottles of water
Riski : thanks akbar but do you still have some money ? I forgot to bring my wallet
Akbar : Oh no,, i spend all of my money for buying this water

The richman ...

Rizal : Sir ,, 10 kilos of oranges.
Sakti : Oke Sir
Riski : Hmm sir ??
Rizal : Yeah
Riski : I want to buy something for my grandma but i don't have ...
Rizal : Wait .. i know , you have no money, do you ? Sir i will pay theirs too so how much is it ?
Sakti : The sum is 15 dollar sir.