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in Aptitude by (79.8k points)

A and B can do a job in 6 and 12 days respectively. They began the work together but A leaves after 3 days. Then the total number of days need for the completion of the work is: 

(a) 4 days 

(b) 5 days 

(c) 6 days 

(d) 9 days 

1 Answer

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Best answer

Correct option (c) 6 days

Explanation: 

3 days work of A and B is 3 × 3 =9 units Work left= 12-9=3 units

B finishes in = 3/1 = 3 days

total no. of days ⇒ 3+3 =6 days

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