SSAT Math Question 514: Answer and Explanation
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Question: 514
8. A computer is priced at $1,800. Next week it will be on sale for $270 less. What percent of the current price will Blythe save if she buys the computer next week?
- A. 10%
- B. 12%
- C. 15%
- D. 20%
Correct Answer: C
Explanation:
C is correct. Use the following formula: Percent of change 
.
In this problem we know that the amount of change is $270 and the starting price of the computer is $1,800. Substitute that information into the formula:
Percent of change = $270/$1,800 = 0.15.
Change that number to a percent by moving the decimal place two places to the right and adding the percent sign.
0.15 = 15%