Question 268807
Given, Sally can paint a house in 4 hours, and John can paint the same house in 6 hour.
Work done by Sally in one hour = 1/4
Work done by Jonh in one hour = 1/6
Total work done by both of them in one hour = (1/4+1/6)
                                            = (3+2)/12
                                            = 5/12
Time taken to paint the house when both of them paint together = 12/5 hours
=2 2/5 hours
=2h (2/5)*60 min
=2h 24 m