Mathematics, 30.03.2020 19:12 trejoarmando061
Suppose the post office sold only five-cent stamps and seven-cent stamps. Some amounts of postage can be made with just those two kinds of stamps. For example, 1 five-cent and 2 seven-cent stamps make 19 cents in postage, and 2 five-cent stamps makes 10 cents in postage. Which amounts of postage is it impossible to make using only five-cent and seven-cent stamps
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Suppose the post office sold only five-cent stamps and seven-cent stamps. Some amounts of postage ca...
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