SOLUTION: At havi's Bakery,Chocolate Brownies are selling for $6.50 per dozen and Butterscotch brownies are selling for $8.75 per dozen. How many Butterscotch brownies should be added to twe

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Question 1126176: At havi's Bakery,Chocolate Brownies are selling for $6.50 per dozen and Butterscotch brownies are selling for $8.75 per dozen. How many Butterscotch brownies should be added to twelve dozen Chocolate brownies to make a mixture that costs $7.50 per dozen
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
b, butterscotch brownies, in dozens

12%2A6.5%2B8.75%2Ab=%28b%2B12%29%2A7.5
8.75b%2B6.5%2A12=7.5%28b%2B12%29
-
8.75b%2B6.5%2A12=7.5b%2B7.5%2A12
1.25b=7.5%2A12-6.5%2A12
%285%2F4%29b=12
b=9.6%2Adozen
About 115 butterscotch brownies


(must be mistake somewhere)