Try out the practice problems below and see how you do. Each represents some important math concepts that are critical to success at school, on the job, and in life. The answers are below.
In May, Gina sold 40 percent more magazine subscriptions than she had in April. In June, she sold 20 percent more subscriptions than she had in May. The number of magazine subscriptions Gina sold was what percent greater in June than in April?
60
64
68
72
80
2. Directions: Answer if the quantity in Column A is greater; if the quantity in Column B is greater; if the two quantities are equal, or if the relationship cannot be determined from the information given
Square A has sides of length x and square B has sides of twice this length.
Column A
Area of square A
Column B
Half the area of square B
Answers and Explanations
The correct answer is . Since we are not given a number for how many subscriptions Gina sold in April, lets pick a number. Lets pick 100. When you have a percent problem and numbers are not provided, you should always pick 100 because it is easy to work with.
In April, lets say Gina sold 100 magazines. We are told that in May she sold 40 percent more magazine subscriptions than she had in April so the number she sold in May is 100 plus 40 percent of 100, or 140. In June, Gina sold 20 percent more subscriptions than she did in May. Well, in May she sold 140 subscriptions and 20 percent of 140 is 20 percent times 140 or 28. 分页标题#e#
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