Based on the price to buy a baker's dozen, the money that the baker will save from buying a Baker's dozen instead of 13 individual rolls is $0.60.
The price per roll is:
= 3.60 / 6
= $0.60
The price of 13 individual rolls is:
= 0.60 x 13
= $7.80
The amount saved is:
= Price of 13 rolls - Price of baker's dozen
= 7.80 - 7.20
= $0.60
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