to find out the total time Jake and Kyile spent working in their project we have to make a multiplication of the time spent and the days they did it:
jake = (3/4)*2 = 6/4 = 3/2
so Jake spent 3/2 hours working in his project, that is 1.5 hours
kyile = (1/4)*6 = 6/4 = 3/2
Therefore they worked the same amount of hours!