Your classmate is starting a new fitness program. he is planning to ride his bicycle 60 minutes every day. he
burns 7 calories per minute bicycling at 11 mph and 11.75 calories per minute bicycling at 15 mph. how long
should he bicycle at each speed to burn 600 calories per hour?

Atown recently dismissed 5 employees in order to meet their new budget reductions. the town had 5 employees over 50 years of age and 19 under 50. if the dismissed employees were selected at random, what is the probability that exactly 2 employees were over 50? express your answer as a fraction or a decimal number rounded to four decimal places.