ISEE Word Problems Question 355: Answer and Explanation
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Question: 355
2. On a hike, Kurt saw 3 times as many sparrows as finches. He saw 12 birds of these two species in all. If s is the number of sparrows Kurt saw, which number sentence can be used to find out how many birds of each species he saw?
- A.
- B. s − 3s = 12
- C.
- D. s + 3s = 12
Correct Answer: D
Explanation:
D is correct. If Kurt saw s sparrows, 3 times as many finches, and 12 birds of both species in all, you can find out how many birds of each species he saw by using the number sentence s + 3s = 12.