THIS MONTH'S QUIZ
Alan Wilkinson, a local schoolmaster and historian,
published a booklet a few years ago entitled "Twenty
Family Walks". In the preface he writes, "The walks are
short, ranging from a mile and a half to five miles; the
average is two and a half miles."
Using only this information, answer the following:
1. What is the total length of all twenty walks?
2. What is the greatest possible number of walks over
four miles long?
3. If there are three walks of five miles each, what is
the greatest possible number of walks less than five
miles but over two and a half miles?