ISEE Word Problems Question 278: Answer and Explanation
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Question: 278
12. The height of a tree is 30 feet, and it casts a shadow of 18 feet, as shown in the diagram.
If Carmella is 5 feet tall, what is the length of her shadow at the same time of day?
- A. 2 feet
- B. 3 feet
- C. 4 feet
- D. 6 feet
Correct Answer: B
Explanation:
B
This question is testing the relationship between similar triangles. Set up a proportion: 
. Cross multiply and divide both sides by 30.