Question

The landing time of Madame Sophie Blanchard (eminent French balloonist) on a field just outside of Compiègne is uniformly distributed on the interval (1PM, 2PM). Her nemesis, Monsieur Guy LeBoeuf (pronounced Gee Luh-Buhf) independently lands his balloon on the same field at a time that is also uniformly distributed on (1PM, 2PM). Determine the probability that the first to land does so prior to 1:15 PM (draw a picture). the answer is 0.4375

I would like to know the answer of question 25

25) In problem (23), determine the probability that the first to land does so prior to 1:15 PM, given that the Madame & the Monsieur land within 15 minutes of each other

Answer 1