ISEE Word Problems Question 228: Answer and Explanation

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Question: 228

8. Two baker's assistants bake cupcakes. Assistant A makes 3 times the number of burnt cupcakes as Assistant B. Both assistants burned a total of 12 cupcakes yesterday. How many cupcakes did Assistant B burn?

  • A. 3
  • B. 4
  • C. 9
  • D. 36

Correct Answer: A

Explanation:

The answer is A

Let x represent the number of cupcakes Assistant B burned. Therefore, x + 3x = 12. Combining like terms and dividing by 4 yields x = 3. Thus, Assistant B burned 3 cupcakes.

You can test the answer choices, starting with choice (B) or (C). If you start with choice (B) that would mean that Assistant A burned 12 cupcakes, and the total would be 16 cupcakes. As this is too many cupcakes, the answer must be choice (A).

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