Question

varun and arun can plough a field in 12 and 18 hrs respectively. varun ploughs the field 4 hrs and then he leaves and then arun ploughs the remaining field. how long did arun take to plough the remaining field?​

Answer 1

time taken by arun and varun to plough the field is:- 12days 18hrs

therefore, time taken by one person:- 12days 18hrs × 2 =25days 12hrs

time taken by arun :- 25days 12hrs - 4 hrs
=25days 8hrs

Answer 2

Answer:

12 days is the answer

Step-by-step explanation:

time taken by varun to plough the field is = 12hrs

time taken by arun to plough the field is =18hrs

part of the field ploughed in one hour by varun is=1/12

part of the field ploughed in one hour by varun is=1/12

part of the field ploughed in four hour by varun is=4*1/12

                                                                                  =1/3

remaining part to be ploughed=2/3

time taken by arun to plough the remaining field is =2*18/3

                                                                                     =36/3

                                                                                     =12days

12 days are needed