Why do we have Daylight Savings anyway? The idea of daylight saving was first conceived by Ben Franklin when he was an American Delegate in Paris. In Franklin’s essay, “An Economical Project,” he explores the thrift of natural versus artificial lighting. Over two centuries later, nations around the world continue to use a variation of his concept to conserve energy and more fully enjoy the benefits of daylight. You can read the full essay here.

This week’s Solve Set is inspired by Daylight Savings. Challenge yourself with math puzzles related to rate, temperature, trigonometry and cross-sections!


screen-shot-2016-11-11-at-10-24-00-amCan you solve Question 1: Save the Day(light)?

In 2016, Daylight Saving Time in the United States began on Sunday, March 13 (turning clocks 1 hour forward), and ended on Sunday, November 6 (turning clocks 1 hour back). About what percent of the year was spent in Daylight Saving?49-1
This solve set also explores how daylight savings plays a role in business and money making!
Conventional wisdom justifies Daylight Saving Time as a way to conserve energy. The theory is, if we spend more waking hours in sunlight, we’ll use less electricity to light our homes. But according to Tufts University professor Michael Downing, many business interest groups lobbied the U.S. Congress to extend Daylight Saving Time. For example, in 1986, the golf industry lobbyists estimated that if daylight saving began a month earlier, revenue would increase by $400 million.
Let’s check that figure. The Consumer Price Index estimates that $1 in 1986 has the same buying power as $2.20 today. There are 15,000 golf courses in the USA, and a full (18-hole) round of golf takes about 4 hours, and costs about $50 today. Assuming these figures are correct, how many extra players per day would the average golf course see because of that extra hour? Assume a 30-day month, and round your answer to the nearest whole number.
Good luck, share with your friends and have fun!
Solve Set 49: Daylight Savings