SOLUTION: To create a chocolate blend, chocolate in two concentrations, 77% cocoa and 68% cocoa, are combined together. If 9 ounces of the 77% chocolate is used, how many ounces of the 68% c
Question 986157: To create a chocolate blend, chocolate in two concentrations, 77% cocoa and 68% cocoa, are combined together. If 9 ounces of the 77% chocolate is used, how many ounces of the 68% chocolate must be used to obtain a 71% chocolate blend? Answer by josgarithmetic(39620) (Show Source):