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tekilochka [14]
2 years ago
10

In 2012 five us postal stamps cost 2.20. how much did seven stamps cost

Mathematics
2 answers:
Neporo4naja [7]2 years ago
8 0
Answer=3.08

   5        7
____=____
2.20      x

cross multiply
5x=15.4
divide both sides by 5
x=3.08
slega [8]2 years ago
8 0
3.08 because 2.2 divide 5 because it is 0.44
0.44 times 7 is 3.08
~JZ
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