[Question]Chip has a $50.00 balance on his credit card. Since he didn't pay it off, he will be charged a 20% interest fee. He puts $20.00 on his credit card the following month and doesn't make any payments to his debt. He is hit with another 20% interest fee. What's the current balance on his credit card?
[Answer]He has a balance of $50.00 and is charged 20% interest so that's 50 * .20 = $10.00. He had a balance of $50.00 and now has a $10.00 interest fee making his balance 50 + 10 = $60.00. His balance is $60.00 and he puts another $20.00 on his card for a total of 60 + 20 = $80.00. He didn't make a payment that month and is hit with another 20% interest fee so that's 80 * .20 = $16.00 in interest. His new balance is 80 + 16 = $96.00. The answer is 96.
Q: Mr. Fortchaud turns on his heater on the 1st of November, 2005. The fuel tank was then full and contained 3,000 L. On January 1, 2006, the tank counter indicated that 180 L remained. Mr. Fortchaud again filled his tank completely. On 1 May 2006, Mr. Fortchaud decided to stop heating and he read 1,238 L on the meter. What the volume of fuel oil that was used between 1 November 2005 and 1 May 2006?
A: I calculate consumption between November 1, 2005 and January 1, 2006: 3,000 180 = 2820 L. I calculate consumption between January 1, 2006 and May 1, 2006: 3,000 1238 = 1762 L. I calculate the total consumption between November 1st and May 1st: 2,820 + 1,762 = 4582 L. The answer is 4582.
Question: A laboratory needs flasks, test tubes, and safety gear to carry out its experiments. They were given a $325 budget for the month. They bought $150 worth of flasks, spent two-thirds of that amount on test tubes, and used half of the test tube cost on safety gear. How many dollars of their budget remained?
Answer: The laboratory spent 2 / 3 * 150 = 300 / 3 = $100 on test tubes. They spent a further 100 / 2 = $50 on safety gear. In all, they spent 150 + 100 + 50 = $300. Thus, 325 - 300 = $25 of the laboratory's budget remained. The answer is 25.
[Question]The price of candy bars is twice the cost of caramel, and the cost of cotton candy is half the price of 4 candy bars. If the price of 1 caramel is $3, how much do 6 candy bars, 3 caramel, and 1 cotton candy cost together?
[Answer]The candy bars each cost $3 * 2 = $6. The cotton candies each cost 1 / 2 * (4 * $6) = $12. 6 candy bars cost 6 bars * $6 / bar = $36. 3 caramels cost 3 caramels * $3 / caramel = $9. All the candies together cost $36 + $9 + $12 = $57. The answer is 57.
Q: The pet shop grooms dogs. It takes 30 minutes to groom a poodle. It takes half as much time to groom a terrier as it takes to groom a poodle. They do not groom cats. If the pet shop grooms 3 poodles and 8 terriers, what is the total length of time it will take, in minutes?
A: At a rate of 30 minutes per poodle, 3 poodles will take 3 * 30 = 90 minutes. If it takes half as much time to groom a terrier as it takes to groom a poodle, it takes 30 / 2 = 15 minutes per terrier. At a rate of 15 minutes per terrier, 8 terriers will take 120 minutes. Thus, in total, it will take the pet shop 90 + 120 = 210 minutes to groom 3 poodles and 8 terriers. The answer is 210.
Question: If Amanda can run the length of a football field 2000 meters in length in 2 hours, how long would it take her to run the length of a 10000-meter track at the same speed?
Answer:
Running the length of a football field 2000 meters in 2 hours is a speed of 2000 / 2 = 1000 meters per hour. At the same speed, Amanda will run the length of a 10000 - meter track in 10000 / 1000 = 10 hours. The answer is 10.