Mrs Lim is baking pandan cakes. Each cake requires 2⅓ cups of flour. She has 8¾ cups of flour. After baking as many cakes as possible with the flour available, she divides the remaining flour equally among 4 containers. How much flour is in each container?
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Worked Solution
Step 1: Find how many cakes can be baked.
8¾ ÷ 2⅓ = 35/4 ÷ 7/3 = 35/4 × 3/7 = 105/28 = 15/4 = 3¾.
Since she can only bake whole cakes, she bakes 3 cakes.
Step 2: Flour used = 3 × 2⅓ = 3 × 7/3 = 7 cups.
Step 3: Remaining flour = 8¾ − 7 = 35/4 − 28/4 = 7/4 cups.
Step 4: Flour per container = 7/4 ÷ 4 = 7/4 × 1/4 = 7/16 cup.
Correct answer: 7/16 cup
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