got two types of info here $ and #buttons Line them accordingly and then cross multiply a. $18/12 dozen buttons = $ x /4 dozen buttons X= 4•18/12= $6 b. $18/12 dozen buttons = $ x/50 dozen buttons X=18•50/12= $75 c. $18/12 dozen buttons = $27/x dozen buttons X=27•12/18=18 dozen buttons
