The high-speed chairlift at a ski resort transports skiers from the bottom to the top of the mountain in 12 minutes at a constant speed. The times that riders are on the lift while it is operating properly are uniformly distributed. The lift operator temporarily stops the lift when a skier falls from the lift at the bottom. What percent of the riders had been on the chairlift between 5 and 10 minutes when the stoppage occurred? Group of answer choices 95% 42% 50% 68%