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Skylar is buying watermelon and pineapple for a fruit salad. Watermelon costs $0.59 per pound and pineapple costs $2.29 per pound. Skylar buys 7 pounds of fruit and spends $9.23. How much does skylar spend just on pineapple?

Sagot :

Since3122015
[tex]0.59w+2.29p=9.23\\w+p=7[/tex]

Guess-and-check shows:

[tex](4)+(3)=7\\7=7\\\\0.59(4)+2.29(3)=9.23\\2.36+6.87=9.23\\9.23=9.23[/tex]

Skylar spent $6.87 on pineapple.
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