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PLZ HELP A scanner scanned 63 photos in 9 minutes. If it scans photos at a constant rate, it can scan_____ photos in 21 minutes
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Ok, so if it scans 63 in 9 minutes how many could it scan in 1 minute
so you subtrack 21 minutes to 63??
am i right
42??
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so 63/9=photos per minute
so 42 photos per minute
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