15(a)Percentages Percentage ChangeEasy2 marksIn a restaurant the cost of a pizza is $25. The restaurant reduces the cost of the pizza to $19.Work out the percentage decrease in the cost.Answer%Grade answerSolutionGrading criteria
15(b)Percentages Percentage ChangeEasy2 marksIn another restaurant, the cost of a pizza is $15. This restaurant adds a service charge of 10% to each pizza.Find the cost of a pizza, including the service charge.$Grade answerSolutionGrading criteria