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Imani is studying for her first accounting exam. She is unsure of what the teacher will ask on the exam or the material covered, so she plans to study for 4 hours. On the second exam, Imani feels more comfortable with the exam format and material, and given that she believes she has an 85% learning curve. How long should she have to study in order to achieve the same results as she received on the first exam? (Round answers to 1 decimal place, esg. 52.7.) hours