Question
A is 20% more efficient than
B. How much time will they working together take to complete a job which A alone could have done in 29 days?
Solution
20%=1/5 A is 20% more efficient than B then efficiency of A and B A            B 6            5 Total work =29×6 Together they can do work in= (29×6)/11 =174/11 days.
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