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Question 86
A can turnout twice the amount of work that B can do. If B alone can complete that work in 12 days, then in how many days can A and B complete that work together ?
Solution
A is twice efficient than B
So A =2
B=1
Total efficiency of A & B=3
B can complete the work in 12 days
So total work is 12×1=12
A & B complete the work in together is =12/3=4 days
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