[Question]Emily goes fishing and has a very busy day. She catches 4 trout, 3 catfish, and 5 bluegills. If the trout weigh 2 pounds each, the catfish weigh 1.5 pounds each, and the bluegills weigh 2.5 pounds each, how many total pounds of fish did she catch?
[Answer]She caught 8 pounds of catfish because 4 x 2 = 8. She caught 4.5 pounds of catfish because 3 x 1.5 = 4.5. She caught 7.5 pounds of bluegill because 5 x 2.5 = 12.5. She caught 20 pounds of fish because 8 + 4.5 + 12.5 = 25. The answer is 25.
Q: Josh has $300 in his wallet, and $2000 invested in a business. If the business's stock price rises 30% and then he sells all of his stocks, how much money will he have in his wallet?
A: If the business's stock price rises 30%, then his share on the company is worth 30% multiplied by $2000 plus $2000 that he already had. That results in 30% * $2000 + $2000 = $600 + $2000 = $2600. Since he already had $300, with $2600 more he will have $300 + $2600 = $2900. The answer is 2900.
Question: Hannah wants to get the highest grade in the class on the upcoming math test. Because she is out sick the day of the test, she learns ahead of time the top scores she has to beat. She finds out that one student got a 95% on the exam. Another student only got 3 wrong out of 40. How many questions does she have to get right to have the highest score in the class?
Answer: One student got 37 questions right because 40 - 3 = 37. This student's proportion right is .925 because 37 / 40 = .925. This student got a 92.5% because .925 x 100 = 92.5. The student got got a 95% got 38 right because 40 x .95 = 38. Hannah must beat the student who got a 38 because 38 > 37. Hannah needs to get 39 questions right because 38 + 1 = 39. The answer is 39.
[Question]Benny has bought a new piggy bank and wants to start saving money. In January he adds $19, then adds the same amount in February. By the end of March, he has $46. How many dollars did he add to the piggy bank in March?
[Answer]In January and February, Benny added 19 + 19 = $38 to the piggy bank. Calculating the difference between this and the total he has at the end of March shows that he saved 46 38 = $8 in March. The answer is 8.
Q: There's an online sale where you get $10 for every $100 that you spend. If you make a purchase of $250 before discounts, how much did you end up paying?
A: If for every $100 spent I save $10, then for $250 spend I'd save $10 * 2 = $20. If my total was $250, then I ended up paying $250 - $20 = $230. The answer is 230.
Question: Three years ago, Bethany was twice the age of her younger sister. In 5 years, her younger sister will be 16. How old is Bethany now?
Answer:
First find how old Bethany's sister currently is: 16 years - 5 years = 11 years. Then find how old her sister was 3 years ago: 11 years - 3 years = 8 years. Then double that age to find how old Bethany was three years ago: 8 years * 2 = 16 years. Then add 3 years to that number to find how old Bethany is now: 16 years + 3 years = 19 years. The answer is 19.