we get that the total cost that Sara has to pay to mail these two mails will be equal to 4 6.12.
Sara has 2 items:
Weight of 1st item = 7 ounces.
Weight of second item = 6 3/5 ounces = 33 / 5 ounces.
Total Weight of items to be mailed = 7 ounces + 33 / 5 ounces
Total Weight = 35 + 33 / 5 ounces = 68 / 5 ounces.
Now, cost of mailing 1 ounce per mail = $ 0.45
Cost of mailing 68 / 5 ounce of mails = 68 / 5 × $ 0.45
Total cost = $ 6.12
Therefore, we get that the total cost that Sara has to pay to mail these two mails will be equal to 4 6.12.
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