SSAT Math Question 167: Answer and Explanation
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Question: 167
1. 45 is to _____ as 90 is to 0.45.
- A. 0.225
- B. 0.900
- C. 4.50
- D. 9.00
Correct Answer: A
Explanation:
The correct answer is (A). This can be set up as a proportion where x is the unknown number:
This is a good problem for estimation. Study the numerators of the fractions and note that 45 is one half of 90. Therefore, the denominators of the fractions must have the same relationship. One half of 0.45 is 0.225.