eceidyrb3909 eceidyrb3909
  • 15-12-2021
  • Mathematics
contestada

In 2012, five U.S. postal stamps cost $2.20. How much did seven stamps cost? Use cross multiplication to solve the proportion.

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mushyy
mushyy mushyy
  • 15-12-2021

Answer: 3.08

Step-by-step explanation:

First, divide 2.20 by 5 to find the price of a single stamp.

2.20 ÷ 5 = 0.44

One stamp cost $0.44

Now, you multiply this by 7 to find the cost of seven stamps.

0.44 × 7 = 3.08

In 2012, seven stamps cost $3.08

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jehanabdallah75 jehanabdallah75
  • 15-12-2021
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