Masuma's finish time = 1/2 x Heathe's time = 1/2 x 60 = 30 seconds
Nashrah's finish time = 4 x Masuma's time = 4 x 30 = 120 seconds
Harsha finished 3/4 of the distance by the time Masuma crossed the finish line.
Harsha's time = 4/3 x Masuma's time = 4/3 x 30 = 40 seconds
