Question

If two persons can do a piece of work in three days, then one person can do it in _______ days​

Answer 1

6 days it will take to do the work

Answer 2

If two persons can do a piece of work in three days, then one person can do it in six days.

Elucidation:-

Let the no. of days required be (d) days.

x (person) || 2 || 1

y (time in days) || 3 || d

Thus, it is a case of indirect proportion, where,

xy = k (constant)

1·d = 2·3

⇒ d = 6.