The question asks for the number of days Vimal will take to complete a work, given that Kamal completes it in 14 days and Vimal is 40% more efficient than Kamal.
Efficiency and the time taken to complete a fixed amount of work are inversely proportional. This means if someone is more efficient, they take less time.
Mathematically, Work = Efficiency × Time. For the same amount of work:
$ \frac{\text{Time}_1}{\text{Time}_2} = \frac{\text{Efficiency}_2}{\text{Efficiency}_1} $
Let $E_K$ be Kamal's efficiency and $E_V$ be Vimal's efficiency.
Vimal is 40% more efficient than Kamal:
$ E_V = E_K + 0.40 \times E_K = 1.40 \times E_K $
Let $T_K$ be the time taken by Kamal (14 days) and $T_V$ be the time taken by Vimal.
Using the inverse relationship:
$ \frac{T_K}{T_V} = \frac{E_V}{E_K} $
Substitute the known values:
$ \frac{14 \text{ days}}{T_V} = \frac{1.40 \times E_K}{E_K} $
$ \frac{14}{T_V} = 1.40 $
$ \frac{14}{T_V} = \frac{140}{100} = \frac{14}{10} $
Solving for $T_V$:
$ T_V = 14 \times \frac{10}{14} $
$ T_V = 10 \text{ days} $
Therefore, Vimal will take 10 days to complete the same piece of work.
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