Answer:45 minsStep-by-step explanation:Determine the total student-hours needed to clean the classroom. Since 1 student can clean it in 6 hours, the total student-hours required is 1 student * 6 hours = 6 student-hoursCalculate how many student-hours 8 students can provide in 1 hour. 8 students can provide 8 student-hours in 1 hourDivide the total student-hours needed by the student-hours provided by 8 students per hour. 6 student-hours ÷ 8 student-hours/hour = 0.75 hoursConvert 0.75 hours into minutes. 0.75 hours * 60 minutes/hour = 45 minutes
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