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To find the total number of problems on the test, we can set up the equation based on the percentage score. If 12 problems correct correspond to an 80% score, we can express this as: ( 0.80 \times \text{total problems} = 12 ). Solving for total problems, we get: ( \text{total problems} = \frac{12}{0.80} = 15 ). Therefore, there are 15 problems on the test.

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1mo ago

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