Two friends, Alejandro and Mia, agreed to split the check at a restaurant. Alejandro ordered $12 worth of food and Mia ordered $
18 worth. At the end of the meal, Alejandro put his $12 contribution on the table, plus a $20% tip on his bill and Mia put her $18 contribution on the table, plus a $15% tip on her bill. The total tip left by Alejandro and Mia is equal to r% of the total check for their table, where the "total check" amount does not include the tip. What is r?
2 (6 x+6)= ? 12 x+ 12= 12 x= -12 x= -1 So first you take what is outside the "( )" and you multiply it with what's in the "( )" so that gave us 12 because 2*6= 12.