Aminah bought a book for $8. She increased the price by 20% and sold the books to James. James further increased the price of the book by 15% and sold to Khalid. Khalid gave james $15. How much change should James give to Khalid?
Aminah increased the price of the book to [tex]8\cdot1.2=9.6[/tex]. James increased the price of the book to [tex]9.6\cdot1.15=11.04[/tex]. So James needs to give [tex]15-11.04=3.96[/tex] to Khalid.
