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A man binds 112 books in a day , and his assistant work 1/4 as fast . How many days will it take them to bind 560 books, if each alone works on alternate days ?

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A train passes city X at 9.55 am and Y city at 10.15 am . The distance between cities X and Y is 45 miles . What is the average speed, in miles per hour of the train ?

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