Anil is twice as good as workman as Bimal and together they finish a piece of work in 9 days. In how many days will Anil alone finish the work?
A
12.5
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B
10.5
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C
11.5
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D
13.5
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Solution
The correct option is B13.5 Let the efficiencies of Anil and Bimal be 100 and 50 respectively. Let x by the number of days taken by April alone to finish the work. 150×9=100×x x=13.5