A craft store buys 50 yards of satin ribbon for $13.50. The store
sells the ribbon by the foot. A customer can purchase 5 feet of
ribbon for $0.80. How much profit does the craft store earn if
they sell 45 yards of the ribbon and scraps the rest?

First convert from yards to feet. 50 yards is equal to 150 feet. To find the unit price for how much they bought it for divide $13.50 / 150 to find that they bought the satin for 9 cents a foot.

Next find how much they sold it for. To find this divide $0.80 / 5 to find that they sold the satin for 16 cents a foot.

To find the profit for 45 yards, convert 45 yards to feet which is 135 feet. Then multiply this by the unit price for sales, 135 * $0.16 to get $21.60

To find the profit subtract the amount they spent on the fabric by the amount they made.

21.60-13.50 = $8.10

A craft store buys 50 yards of satin ribbon for $13.50. The store sells the ribbon by the foot. A customer can purchase 5 feet of ribbon for $0.80. How much profit does the craft store earn if they sell 45 yards of the ribbon and scraps the rest?

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A craft store buys 50 yards of satin ribbon for $13.50. The store
sells the ribbon by the foot. A customer can purchase 5 feet of
ribbon for $0.80. How much profit does the craft store earn if
they sell 45 yards of the ribbon and scraps the rest?