[Question]Ali and Ernie lined up boxes to make circles. Ali used 8 boxes to make each of his circles and Ernie used 10 for his. If they had 80 boxes to begin with and Ali makes 5 circles, how many circles can Ernie make?
[Answer]Ali made 5 circles with 8 boxes each so he used 5 * 8 = 40 boxes. There were 80 boxes to start with so now there are 80 - 40 = 40 boxes left. Ernie used 10 boxes to make one circle so with 40 boxes he can make 40 / 10 = 4 circles. The answer is 4.
Q: A patient is receiving treatment through a saline drip which makes 20 drops per minute. If the treatment lasts 2 hours, and every 100 drops equal 5 ml of liquid, how many milliliters of treatment will the patient receive after the 2 hours have passed?
A: The total of minutes the treatment will take is 2 hours x 60 minutes / hour = 120 minutes. After 120 minutes has passed the total amount of drops that the patient will receive is 20 drops / minute x 120 minutes = 2400 drops. Knowing the number of drops, we know that the patient has taken 2400 drops x 5 ml / 100 drops = 120 ml. The answer is 120.
Question: Jon’s textbooks weigh three times as much as Brandon’s textbooks. Jon has four textbooks that weigh two, eight, five and nine pounds respectively. How much do Brandon’s textbooks weigh?
Answer: Jon’s textbooks weigh 2 + 8 + 5 + 9 = 24 pounds. Thus, Brandon’s textbooks weigh 24 / 3 = 8 pounds. The answer is 8.
[Question]Barry, Thomas and Emmanuel are to share a jar of 200 jelly beans. If Thomas takes 10%, and Barry and Emmanuel are to share the remainder in the ratio 4:5 respectively, how many jelly beans will Emmanuel get?
[Answer]10% of 200 jelly beans is (10 / 100) * 200 = 20 jelly beans. Thomas takes 20 jelly beans leaving 200 - 20 = 180 jelly beans. 180 jelly beans are to be shared in the ratio 4:5 so each share is 180 / (4 + 5) = 20 jelly beans. Emmanuel gets 5 shares which is 5 * 20 = 100. The answer is 100.
Q: Alicia has 20 gumballs. Pedro has that many gumballs plus an additional number of gumballs equal to three times the number Alicia has. They put their gumballs in a bowl, and later Pedro takes out 40% of the gumballs to eat. How many gumballs are remaining in the bowl?
A: If Pedro has three times more gumballs than Alicia, he has 3 * 20 gumballs = 60 gumballs more. In total, Pedro has 20 gumballs + 60 gumballs = 80 gumballs. When they put their gumballs together, the total number of gumballs in the bowl becomes 20 gumballs + 80 gumballs = 100 gumballs. Pedro takes out 40% of the gumballs which is 40 / 100 * 100 gumballs = 40 gumballs. The number of gumballs remaining is 100 gumballs - 40 gumballs = 60 gumballs. The answer is 60.
Question: Heaven and her younger brother want to buy school supplies, so they ask their father for money, who gives them $100 in total to use. Heaven buys two sharpeners and four notebooks at $5 each, and her brother uses the remaining amount to buy ten erasers at $4 each and some highlighters. How much money did Heaven's brother spend on highlighters?
Answer:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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Heaven spent 2 * 5 = $10 on sharpeners. She also spent 4 * 5 = $20 on notebooks. Heaven's brother used 10 * 4 = $40 to buy erasers. The total amount of money Heaven and her sister spent on sharpeners, notebooks, and erasers is 40 + 20 + 10 = $70. The total amount of money her brother spent on highlighters is 100 - 70 = $30. The answer is 30.