2.24 Question #23 - Thanks

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HFRE_ERZBIRQ_YRTNY_620

Mathematics

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Explanation & Answer

9,5x+ 7.5 y = 717

x+y =90

9.5x+9.5 y = 855

0.5x+7.5 y =717

2 y = 138

y =69        at $7.5

x =21          at $9.5

21* 9.5 +69 * 7.5= 717


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