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A can complete a piece of work in 12 day...

A can complete a piece of work in 12 days. B is 60% more efficient than A. The number of days, that B will take to complete the same work, is

A

6 days

B

`7 1/2` days

C

8 days

D

`8 1/2` days

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CHAMPION PUBLICATION-2010 TIER-II PAPER(24)-EXERCISE
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  12. 3/4(1+1/3)(1+2/3)(1-2/5)(1+6/7)(1-(12)/(13))=? 1/5 (b) 1/6 (c) 1/7 (d...

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  13. 10.Using suitable identity prove that: qquad ((0.87)^(3)+(0.13)^(3))/(...

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  14. If x^2+y^2-2x+6y+10=0 then the value of the (x^2+y^2) is -

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