SOLUTION: The cost of a high school ring is $145 for the large size and $115 for the regular size. The total receipts from the sale of 120 rings was $15,060. How many rings of each size were

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Question 467616: The cost of a high school ring is $145 for the large size and $115 for the regular size. The total receipts from the sale of 120 rings was $15,060. How many rings of each size were sold?
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
l+r=120
145l+115r=15060
115l+115r=13800
30l=1260
l=42
r=78
There were 78 regular and 42 large rings sold..