Respuesta :

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Answer:

$36, 5 boxes in total would be $9 dollars and 1 box would be $1.8 on its own, Multiply 1.8 times 20 and you get $36

Hope i could help
5 boxes equal 9$. Divide the 5 boxes by 9 or divide 20 by 5. 20 divided by 5 is 4 the 4 times 9 is 36 and 20 boxes will cost 36$

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