Sierra's swimming lessons last 1 hour 20 minutes.she finished her lesson at 10:50 what time did her lesson start?


9 hours and 30 minutes because: if the time she finished is 10.50 and her lessons are an hour and 20 minutes long you subtract the finishing time to the time it takes for her lesson. 10.50-1.20=9.30  just used a calculator but mental math is usable for this problem. LOVE YOU

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The answer would be 9:30 because you would subtract 1 hour and 20 minutes from 10:50 A.M..

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