Percentages, discounts, taxes

Question

Suppose you bought 5 sandwiches for you and your friends, each of which cost $8.15, not including 8% tax. After adding the tax, how much change would you get from a fifty-dollar bill?

Answer 1

Price per sandwich $8.15

Cost for 5 sandwiches 5*$8.15=$40.75

Tax is 8% or 0.08=40.75*0.08=$3.26

Add the tax to the price of the sandwiches=$40.75+3.26=$44.01

Change from $50=$50-$44.01=$5.99