Payal and pooja complete a work in 14 days doing together if payal works for 3.5 days and pooja for 9.5 days

Payal and pooja complete a work in 14 days doing together if payal works for 3.5 days and pooja for 9.5 days, they finish half work. In how much time pooja alone complete the work?

a)            20days

b)            23days

c)            22days

d)            24days

Sol:

3.5 days Payal + 9.5 days Pooja=half work

3.5 days Payal + 3.5 days Pooja=work/4

6 days pooja = work/4

Pooja alone =24 days