Problem: A housewife saved $2.50 in buying a dress on sale. If she spent $25 for the dress, she saved about:
Answer Choices:
A. 8%
B. 9%
C. 10%
D. 11%
E. 12%
Solution:
Let C be the original price of the dress. Then 25=C−2.50 or C=27.50. 250/2750=1/11∼9%.