Yesterday, as my parents were out, my brother and I were the only ones home. Since there was no other food available at home, I decided to order some pizza for lunch.
The total price was $27.90 and I had a $50 note. As the delivery guy was having some trouble, I managed to mentally count the change, and informed him I should receive $22.10 back.
My brother and I then enjoyed our lunch, and I have also learnt the usefulness of Mathematics and applying it to real life.