Practicing Success
A does half as much work as B in one-sixth of the time. If together they take 10 days to complete a work. How much time shall B alone take to do it ? |
40 days 30 days 20 days 10 days |
40 days |
A × 1/6 = B × 1/2 Efficiency of A : B = 3 : 1 Total work = Efficiency × Time = ( 3 + 1 ) × 10 = 40 Time taken by B alone to complete the work = 40/1 = 40 days
The correct answer is option (1) : 40 days |