A work can be completed by some people in 12 days. Half of this work will be completed by twice the number of these people in-

Explanation

Let, x people can do 1 work in 12 days ∴ 1 people can do 1 work in = 12 × x = 12x days. ∴ 2x people can do $$\frac{1}{2}$$ of work in = $$\frac{12x \times \frac{1}{2}}{2x}$$ = 3 days.