Question

some persons can do a piece of work in 12 days.Two times the number of those persons will do half of that work in:

Answer 1

let no. of people be x . therefore x people do a piece of work in 12 days than acc. to the que. when the no. of people is doubled and piece of work is half than days taken will be 12/4=3days

Answer 2

Answer:

3 days

Step-by-step explanation:

Let X be the number of person

in second case, Number of person = 2 X and y is the number of days

Now,

X * 12/ 1 = 2 X * y/ (1/2)

12 X / 2 X =  2 y

6/2 = y

y = 3

Hence the number of days require to do half of the work is 3 days