Question

four dozen bagels cost $30 how much change will you receive if you pay for a dozen bagels with a $10 bill

Answer 1

Well, one dozen bagels would cost $7.50 so the amount of change you would receive would be $2.50

Answer 2

you have change of $2.50. Since there are 48 bagels in 4 dozen, $30/48 is .625 per bagel, which multiplied by 12 (amount in a dozen) would equal 7.50, having 10 - 7.5 equal 2.5. Hope this helps