There were 90 runners to start a race. In the first half of the race, 1/6 of them dropped out. In the second half of the race, 2/5 of the remaining runners dropped out. How many runners finished?

Answer 1

90- 90/6 = 90-15 = 75 at the half

75 - (2/5)75 = 75 - 30 = 45 runners left at the end

(5/6)(90)(3/5)= 45