Answer: 9 cents
Step-by-step explanation
If you buy 6 cans at $0.60 each, then you'd spend 6*($0.60) = $3.60 without the discount.
With the discount, you save $0.53 or 53 cents because $3.60 - $3.07 = $0.53
Divide this over 6 cans to find that: 0.53/6 = 0.08833 approximately. Rounding to the nearest penny gets us $0.09 or 9 cents.
Therefore, you save about 9 cents per can when going with the discount.