• If A complete some work in 6 days...
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• If A complete some work in 6 days, B done the remaining work in 12 days. If ratio of time taken by A & B individually to complete a work is 2:3. The find the time taken by B alone to com READ ON APP

SSC CGL
Maths
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89
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( A-1 X ) ( B-2 X ) here ( L C M ) is ( 2 X ) A's one day work is 2 unit B's one day work is 1 unit hence ( A+B ) one day work is 3 unit ( mathrm{A}+mathrm{B} ) can do a job in ( 2 mathrm{X} / 3 ) and we know, ( 2 mathrm{X} / 3=12 ) so ( 2 mathrm{X}=36 ) hence ( X=18 ) hence B complete the work in ( 2^{*} 18=36 ) days
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