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reasoning apptitude Anna, Benne and Cenna are have friends. Anna and Benne are twins. Benne takes 2 days more than Cenne to complete the work. If Anne started a work and 3 days later Benne joins him then the work gets complete in 3 more days. Working together . Anne, Benne and Cenne can complete thrice the original work in 6 days. In how many days Benne can complete twice the original work with double the efficiency working alone?