On a two test, Babar answered 60% of the questions correctly on Part I and 90% correctly on Part II. If there were 40 questions on Part I and 80 questions on Part II, and if each question on both parts was worth 1 (one) point, what was her score, as a percent of the total? The total number of questions is

$$40 + 80 = 120$$

. The number of questions answered correctly on Part I is

$$0.6 \times 40 = 24$$

and on Part II is

$$0.9 \times 80 = 72$$

. Therefore, her total score is

$$24 + 72 = 96$$

. As a percent of the total, her score is

$$\frac{96}{120} \times 100 = 80\%$$

.

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2.If the population of Town B is

3.The difference of two numbers is

4.If the ratio of

5.The average (arithmetic mean) of seven integers is

6.

7.The first term in a sequence is

8.If a, b and c are positive even integers such that

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11.If

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