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Mathematics>Standard Multiple Choice

Read the following SAT test question and then click on a button to select your answer.
Anna spent 3 hours in her garden planting 6 rosebushes. To plant a rosebush, she first dug a hole then refilled the hole with the root ball, dirt, and compost. She spent twice as long digging the hole for each plant as she did refilling it. Which of the following could be used to find the number of minutes, m, Anna spent digging each hole?


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