tclay51 tclay51

28-06-2017
Mathematics

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Scanner scanned 72 photos in 8 min. If it scans photos at a constant rate. It can scan ____ photos in 23 mins

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RickyChen RickyChen

28-06-2017

Rate: 72/8 = 9 photos/min

23 mins -> 9 * 23 = 207 photos

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