Problem
Each member of a research group visited either the Virgin Islands or Hawaii...
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So What?
Math questions involving two equations and two unknowns can usually be combined into one equation with one unknown.
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Math Grid-In
The second Mathematics section of the PSAT includes eight problems that are called student-produced responses. In this set, you are asked to solve each problem, marking its answer in ovals on a provided grid. The student-produced responses are designed to test your ability to solve a math problem on your own, without the advantage of the process of elimination. The student-produced responses portion of your answer sheet will have eight answer grids. Each grid consists of four columns and twelve rows. To enter a number onto the grid, write each of its digits or symbols in exact order in the boxes at the top of the grid. Then shade in the corresponding oval beneath it. A decimal point is provided for numbers such as .25, and a slash is provided for fractions, such as 1/4. The PSAT grading machine will read only the filled-in ovals, not your writing in the boxes at the top of the grid. Tips for Gridding-In Your Answers
Remember the following when entering numbers onto the answer grid:
- Although not required, it is suggested that you begin by writing your answer in the boxes at the top. Doing this will help you grid-in the ovals accurately.
- Mark no more than one oval in any one column.
- The answer sheet will be machine scored on the real PSAT, so you will only receive credit if the ovals are filled in correctly.
- Some problems may have more than one correct answer; if this is the case, grid-in only one answer.
- No question will have a negative answer.
- If your answer is a fraction, you must grid-in the fraction slash in its own column.
- If your answer contains a decimal point, you must enter it in its own column.
- Mixed numbers, such as 1 1/2 , must be gridded-in using either a decimal point (1.5) or an improper fraction 3/2 . If you enter your answer as a mixed number, the machine scoring your test will interpret 1 1/2 as 11/2, not 3/2.
- If your solution is a repeating decimal, such as 0.6666... , you must round the number to the most accurate answer the grid can accommodate (such as .666 or .667). Less accurate values, such as .6 or .67, will not be correct.
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