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A can do a certain work in 12 days. B is 60% more efficent than A, How many days will B and A together take to do the same job ? 

(a) 80/13 days 

(b) 70/13 days 

(c) 75/13 days 

(d) 60/13 days

1 Answer

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Best answer

Correct option (d) 60/13 days


According to question

Time taken by A and B together to complete the task 60/13 days.

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