Rates, SM-Bank 017 Constance used 300 grams of sugar to make 12 brownies. How many grams of sugar will she need to make 18 brownies? (2 marks) --- 4 WORK AREA LINES (style=lined) --- Show Answers Only \(450\ \text{grams}\) Show Worked Solution \(\text{Method 1}\) \(\text{Sugar to make 18 brownies}\) \(=\dfrac{18}{12}\times 300\) \(=1.5\times 300\) \(=450\ \text{grams}\) \(\text{Method 2 – Unitary Method}\) \(300\ \text{g/}12\ \text{cookies}\) \(=\dfrac{300}{12}\ \text{g/cookie}\) \(=25\ \text{g/cookie}\) \(\text{Sugar to make 18 brownies}\) \(=25\times 18\) \(=450\ \text{grams}\)