SSAT Math Question 640: Answer and Explanation
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Question: 640
| District | 1990 | 1991 |
| A | 400 | 600 |
| B | 500 | 700 |
| C | 200 | 350 |
| D | 100 | 150 |
| E | 600 | 800 |
3. (All numbers are in thousands of dollars.)
The total increase in energy expenditure in these districts, from 1990 to 1991, is how many dollars?
- A. $800
- B. $1,800
- C. $2,400
- D. $2,600
Correct Answer: E
Explanation:
Remember that these numbers are in the thousands. Add down to find the sum of the values in 1990: $1,800,000. Do the same with the values in 1991 to find a sum of $2,600,000. Find the difference of these values: $2,600,000 - $1,800,000 = $800,000. The correct answer is (E).