A and B do a work in 9 days . A alone do this work and take 24 days less than from B. than B alone will do it work in how many days?
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your question is wrong because if A &B takes 9days then A do not takes 24 days less than from B
001rahulsoni:
its right Question
no if A takes less than 24days from B then A+B is greater than 9days
no
its totly right question
A&B do a work in 9days. Let the work done by B=x. the work done by A=x-24. 1day work of A&B =1/9. 1day work of B=1/x. 1 day work of A=1/x-24 . 1/x-24 +1/x=1/9 x+x-24/x(x-24) 2x-24/x²-24x=1/9 18x-216=x²-24x x²-24x-18x+216=0 x²-42x+216=0 x²-6x-36x+216 =0 x(x-6)-36(x-6)=0 (x-36)(x-6)=0 x-36=0,x-6=0 x=36, x=6 then B takes 36 days
gud
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