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Munagala Janardhana Reddy

· started a discussion

· 1 Months ago

alternaye solution (Question: 252303.0 )

let efficiency (C:(A+B)) = 1:2
the time taken (C:(A+B)) = 2x : x
A,B,C WORK IN = (2x/3)
since C can do work in 20 days ==>(A+B) do in 10 days
the time taken (C:(A+B)) = 2x : x ==> 20 : 10
A,B,C WORK IN = 1/(1/10 + 1/20) =20/3 =6 2/3 days

Question:
A is 50% as efficient as B. C does half of the work done by A and B together. If C does the work alone in 20 days, then A, B and C together can do the work in —
Options:
A) 6 days 
B) 6 \(\cfrac{2}{3}\) days
C) 7 days 
D) 5 \(\cfrac{2}{3}\) days 
Solution:
Ans: (b) 


PRITAM

· commented

· 1 Months ago

where is given a+b efficiency?? bhai nai aata toh tukka mat maara kar
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