Question: A car uses 20 gallons of gas to travel 400 miles. Mr. Montero's car has 8 gallons in it. How many more gallons of gas does he need to travel 600 miles, back and forth?
Answer: Mr. Montero is traveling a total distance of 600 miles + 600 miles = 1200 miles. There are 1200 miles / 400 miles = 3 sets of 400 miles in 1200 miles. So Mr. Montero needs 20 gallons / set x 3 sets = 60 gallons in all. Since his car has 8 gallons already, then he needs to add 60 gallons - 8 gallons = 52 gallons more. The answer is 52.
[Question]John uses a 75-watt electric fan for 8 hours a day. How much kWh of electric energy does he consume per month (30 days) for using the electric fan?
[Answer]In a day, John uses 75x 8 = 600 watts. So in a month, he uses 600 x 30 = 18 000 watts. Since there are 1000 watts in 1 kilowatt, then John uses 18000 / 1000 = 18. The answer is 18.
Q: James earns $20 an hour while working at his main job. He earns 20% less while working his second job. He works 30 hours at his main job and half that much at his second job. How much does he earn per week?
A: James earns 20 * .2 = $4 less while working his second job. So he earns 20 - 4 = $16 an hour. At his first job he earns 20 * 30 = $600. He works 30 / 2 = 15 hours at his second job. So he earns 15 * 16 = $240. So he earns 600 + 240 = $840 a week. The answer is 840.
Question: Max attended 40 college courses in 2 years. Sid attended four times as many college courses as Max in the same period. What's the total of college courses they both attended?
Answer: If Sid attended four times as many college courses as Max, he attended 4 * 40 = 160 college courses. The total of college courses they both attended is 160 + 40 = 200. The answer is 200.
[Question]Each wall of a 3 sided shower has 8 tiles running the width of the wall and 20 tiles running the height of the wall. How many tiles are in the shower?
[Answer]There are 8 tiles along the width and 20 tiles along the height for a total of 8 * 20 = 160 tiles. Each wall has 160 tiles and there are 3 walls so there are 160 * 3 = 480 tiles in the shower. The answer is 480.
[Question]Students at Highridge High earn 2 points for each correct answer during a quiz bowl If a student correctly answers all the questions in a round, the student is awarded an additional 4 point bonus. They played a total of five rounds each consisting of five questions. If James only missed one question, how many points did he get?
[Answer]
If James only missed one question in all five rounds of five questions, he correctly answered 5 * 5 - 1 = 24 questions. Before the bonus, James earned 24 correct answers * 2 points / answer = 48 points. Since missing one question would only disqualify him from receiving a bonus in one round, he would earn a bonus for 5 - 1 = 4 rounds. He should expect a bonus of 4 rounds * 4 points / round = 16 points. Including his bonus, James scored a total of 48 + 16 = 64 points. The answer is 66.