Q: An agricultural cooperative must ship 6500 kg of potatoes. During transport by truck, 150 kg are damaged and therefore cannot be sold. The potatoes are distributed in 50 kg bags, each bag being sold for $72. What will the sale of the potatoes bring?
A: There are 6500 kg – 150 kg = 6350 kg of sellable potatoes. These will fit into 6350 kg / 50 kg / bag = 127 bags. In total, these will be sold for 127 bags * $72 / bag = $9144. The answer is 9144.
Question: Doris earns $20 per hour by babysitting. She needs to earn at least $1200 for her monthly expenses. She can babysit for 3 hours every weekday and 5 hours on a Saturday. How many weeks does it take for Doris to earn enough to cover her monthly expenses?
Answer: Doris babysits for a total of 5 weekdays x 3 hours / weekday = 15 hours. She babysits for a total of 15 + 5 = 20 hours in a week. She earns 24 x $20 = $480 in a week. So, it will take $1440 / $480 = 3 weeks to earn Doris needed amount. The answer is 3.
[Question]This weekend's football game matched the Seattle Seahawks with the Denver Broncos. The final score was 37-23, with the Seattle Seahawks taking the win. If a touchdown is worth 7 points and a field goal is worth 3 points, how many touchdowns did the Seattle Seahawks score if they scored 3 field goals during the game?
[Answer]The Seattle Seahawks scored 3 field goals during the length of the game and each field goal is worth 3 points, so 3 * 3 = 9 points were made by the Seattle Seahawks from field goals. The Seattle Seahawks won so their total points would be 37 with 9 of those points accrued through the scoring of field goals, which makes 37 - 9 = 28 points left to be scored by touchdowns. There are 28 points scored by touchdowns and each touchdown is worth 7 points, so this means that 28 / 7 = 4 touchdowns were scored by the Seattle Seahawks throughout the game. The answer is 4.
Q: The time Juan takes to grab his lunch from his office and back is half the time he takes to read a book. If he has a 4000-page book, how many pages does he read in an hour if he takes 4 hours to move from his office to grab lunch?
A: If Juan takes 4 hours to move from his office to grab lunch, moving from his office and back takes 2 * 4 = 8 hours. The time Juan takes to grab his lunch from his office and back is half the time he takes to read a book, meaning he reads a book in 8 * 2 = 16 hours. If he has a 4000 - page book, he will read 4000 / 16 = 250 pages in an hour. The answer is 250.
Question: Lorin has 4 black marbles. Jimmy has 22 yellow marbles. Alex had twice as many black marbles as Lorin and one half as many yellow marbles as Jimmy. How many marbles does Alex have?
Answer: Alex has 2 * 4 = 8 black marbles. Alex has 22 / 2 = 11 yellow marbles. Alex has 8 + 11 = 19 marbles. The answer is 19.
Q: The average score on last week's Spanish test was 90. Marco scored 10% less than the average test score and Margaret received 5 more points than Marco. What score did Margaret receive on her test?
A:

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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The average test score was 90 and Marco scored 10% less so 90 * .10 = 9 points lower. The average test score was 90 and Marco scored 9 points less so his test score was 90 - 9 = 81. Margret received 5 more points than Marco whose test score was 81 so she made 5 + 81 = 86 on her test. The answer is 86.