Answer the following question.
Kelly, Brittany, and Buffy went swimming at Salt Rock Lake and held a contest to see who could hold their breath underwater for the longest amount of time. Kelly held her breath underwater for 3 minutes. Brittany held her breath underwater for 20 seconds less time than than Kelly did, and Buffy held her breath underwater for 40 seconds less time than Brittany did. How long, in seconds, did Buffy hold her breath underwater?
Step-by-step reasoning process: Kelly held her breath for 3 minutes, or 3 * 60 = 180 seconds. Brittany held her breath for 20 seconds less time than Kelly did, or 180 - 20 = 160 seconds. And Buffy held her breath for 40 seconds less time than Brittany did, or for 160 - 40 = 120 seconds.
The answer is 120.

Answer the following question.
Julie started her own landscaping business. She charges $4 an hour for mowing lawns and $8 for pulling weeds. In September she mowed lawns for 25 hours and pulled weeds for 3 hours. If she worked the same number of hours in October, how much money did she earn in September and October?
Step-by-step reasoning process: She mowed lawns for 25 hours in September, so earned 25 * $4 = $100. She pulled weeds for 3 hours in September, so earned 3 * $8 = $24. She earned $100 + $24 = $124 in September. Finally, for two months working the same hours she earned $124 * 2 = $248.
The answer is 248.

Answer the following question.
Three companies, A, B, and C, each purchased 10 ad spaces on a newspaper, with each ad space having a size of 12 foot by 5-foot rectangle. If each square foot ad was charged at $60, how much money did the three pay for the ads combined?
Step-by-step reasoning process: A size 12 foot by 5 - foot rectangle ad takes 12 * 5 = 60 square feet since the area of a rectangle is l * w. If each company bought 10 ad spaces, the total area that their ads took is 60 * 10 = 600 square feet. If each square foot of ad space was charged at $60, 600 square feet of ads cost $60 * 600 = $36000. If all three companies each purchased an equal number of ad space, together they paid $36000 * 3 = $108000.
The answer is 108000.

Answer the following question.
Over the past five years, on July 4th, the high temperature for Washington, DC has been: 90 degrees in 2020, 90 degrees in 2019, 90 degrees in 2018, 79 degrees in 2017 and 71 degrees in 2016. What is the average temperature for July 4th in Washington, DC over the past 5 years?
Step-by-step reasoning process: Over the past five years, the sum of the temperatures was 90 + 90 + 90 + 79 + 71 = 420. To find the average temperature you divide the total temperature (420) by 5, so 420 / 5 = 84 degrees.
The answer is 84.