Question: In North Carolina, Jim bought 10 gallons of gas at $2.00/gallon. He paid $1.00 more per gallon in Virginia where he bought another 10 gallons of gas. How much has he spent on gas?
Answer: In North Carolina, he bought 10 gallons at $2.00 / gallon for a total of 10 * 2 = $20.00. He paid $2.00 a gallon in North Carolina and $1.00 more in Virginia for a total of 2 + 1 = $3.00 / gallon. He bought 10 gallons at $3.00 / gallon in Virginia for a total of 10 * 3 = $30.00. He spent $20.00 in North Carolina and $30.00 in Virginia for total of 20 + 30 = $50.00. The answer is 50.

Question: Agatha has $60 to spend on a new bike. She spends $15 on the frame, and $25 on the front wheel. What does she have left, in dollars, to spend on a seat and handlebar tape?
Answer: Agatha spends 15 + 25 = 40 dollars. Agatha has 60 - 40 = 20 dollars left. The answer is 20.

Question: Matilda has half as many jellybeans as Matt. Matt has ten times as many jellybeans as Steve. If Steve has 84 jellybeans, how many jellybeans does Matilda have?
Answer: Matt has 84 * 10 = 840 jellybeans. Matilda has 840 / 2 = 420 jellybeans. The answer is 420.

Question: Everett built a rectangular concrete patio that was four times as long as it was wide. If the perimeter of the patio was 100 feet, what was the length of the patio, in feet?
Answer:
Let's make "x" be the width of the patio. Then the length of the patio would be 4 * x. And the perimeter of the patio would be the sum of all four sides, or x + (4 * x) + x + (4 * x) = 100 feet. This simplifies to 10x = 100 feet. And the width of the patio x = 10 feet. And the length of the patio is 4 * x = 4 * 10 = 40 feet. The answer is 40.