
Mark M. answered 06/25/15
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Mathematics Teacher - NCLB Highly Qualified
A: 3 @ 15.60, so six cost 31.20
B: 1 @ 6.00, so six cost 36.00
Savings = B - A
Savings = 36.00 - 31.20
Savings = 4.80

Mark M.
Eunice, you are welcome!
Thank you for the comment. Telling me that my explanations help you understand is very gratifying.
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06/25/15
Taylor D.
06/25/15