The school cafeteria makes cheese sauce for macaroni using 15 cups of Swiss cheese and 17 cups of cheddar cheese Perry tries to make sauce for a family party using 5 cups of Swiss and 7 cups of cheddar is Perry using the correct ratio.

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Answer:

answer is 4 ecause subtract 15 and 17 and you get 2 then subtract 5 and 7 and you get 2 then add 2 and 2 and you get 4

Step-by-step explanation: