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If every 2 out of 3 readymade shirts ...

If every 2 out of 3 readymade shirts need alterations in the collar, every 3 out of 4 need alterations in the sleeves, and every 4 out of 5 need it in the body, how many alterations will be required for 60 shirts? (a) 24        (b) 123       (c) 133     (d) 143

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