Got Three 20 Peso Bills

Before posting anything here, I checked my pocket for possible money there. And yes, I got here 3 twenty peso bills.

So, what should I do with this?

First, I will use it to pay for the internet rental. The extra money, I will use them to pay for my snack and lunch.

But I think, it is not enough to pay for my lunch considering that one viand cost 50 pesos already. In other words, I still need to open my wallet and get some to pay for the lunch.