Q: Kerry is ready to celebrate his birthday and wants to have three cakes with his age in candles on each of them. Candles come in boxes of 12 and cost $2.5 a box. If the candles cost $5, how old is Kerry?
A: He needed 2 boxes of candles, because 5 / 2.5 = 2. He needed 24 candles because 2 x 12 = 24. He is 8 because 24 / 3 = 8. The answer is 8.
Question: Beth is a scuba diver. She is excavating a sunken ship off the coast of a small Caribbean island and she must remain underwater for long periods. Her primary tank, which she wears when she first enters the water, has enough oxygen to allow her to stay underwater for 2 hours. She also has several 1-hour supplemental tanks that she takes with her as well as stores on the ocean floor so she can change tanks underwater without having to come up to the surface. She will need to be underwater for 8 hours. How many supplemental tanks will she need?
Answer: For an 8 - hour dive, she will use her 2 - hour primary tanks and will need supplemental tanks for 8 - 2 = 6 additional hours. Since each supplemental tank holds 1 hour of oxygen, for 6 hours she will need 6 / 1 = 6 supplemental tanks. The answer is 6.
[Question]In a shop, there is a sale of clothes. Every shirt costs $5, every hat $4, and a pair of jeans $10. How much do you need to pay for three shirts, two pairs of jeans, and four hats?
[Answer]Three shirts cost 3 * 5 = $15. Two pairs of jeans would cost 2 * 10 = $20. Four hats would in total cost 4 * 4 = $16. So for three shirts, two pairs of jeans, and four hats, you would need to pay 15 + 20 + 16 = $51. The answer is 51.
Q: Dexter went to the mall and saw that Apple products are on sale. He wants to buy an iPhone 12 with a 15% discount and an iWatch with a 10% discount. The price tag shows that an iPhone 12 costs $800 while an iWatch costs $300. Upon check out, he will receive a further 2% cashback discount. How much would the items cost in total after the discount and cashback?
A: The discount for an iPhone 12 is $800 x 15 / 100 = $120. So, the iPhone will now cost $800 - $120 = $680. The discount for an iWatch is $300 x 10 / 100 = $30. So, the iWatch will now cost $300 - $30 = $270. The total cost of the iPhone and iWatch is $680 + $270 = $950. The cashback will be $950 x 2 / 100 = $19. Thus, Dexter will only pay $950 - $19 = $931. The answer is 931.
Question: On his farm, Mr. Valentino has 200 chickens, twice as many ducks as chickens and three times as many turkeys as ducks. How many birds does Mr. Valentino have on the farm in total?
Answer: Mr. Valentino has twice as many ducks as chicken on his farm, which means there are 2 * 200 = 400 ducks on the farm. The number of turkeys is three times as many as the number of ducks on Mr. Valentino's farm, a total of 3 * 400 = 1200 turkeys. In total, Mr. Valentino has 1200 + 400 = 1600 ducks and turkeys on his farm. If you add the number of chickens on the farm, the number of birds on the farm becomes 1600 + 200 = 1800 birds. The answer is 1800.
Q: Missy had a giant piggy bank in her bedroom. Every day she would search the house for change to put in her bank. After 4 years, the bank was opened and it contained $450 in change. If the second, third, and fourth-year she doubled the amount of money she put in the bank from the amount she had put in the previous year, how much money, in dollars, did she put in the bank the first year?
A:
We let x be the amount of money she put in the bank the first year,. Then the second year was 2 * x,. and the third year was 2 * 2 * x = 4 * x,. and the fourth year was 2 * 2 * 2 * x = 8 * x. And the total amount she put in the bank, $450, is the sum of all four years, or $450 = x + (2 * x) + (4 * x) + (8 * x). This simplifies to $450 = 15 * x. And therefore, the amount of money she put in the bank the first year was x = $30. The answer is 30.