Find the total cost: $2,500 bill with 6.5% tax
Total Tax: 162.50Total Cost/Price: 2662.50
Divide 2,500 by 100 to get 1% then times the answer by 6.5 to get the total tax, then add the answer onto $2,500 and vuala! Theres the answer (or at least that's how we learn it in England)