This particular question can be solved using the unitary method (this method include solving the problem for 1 unit and then multiplying it with how many units are required), which is proceded as :-

3 persons can rewire the house in = 4 days

1 person can rewire the house in = 3/4 days

Hence, 4 persons can rewire the house in = (3/4)×4 days

=3 days.

(Now writing the proper statement at the end to complete the answer)

So, if Jasminder uses 4 persons using 3 to rewire her house, it will take 3 days.

• This reply was modified 1 year, 9 months ago by  Isha Talwaria.