Question: Bernie has a collection of 18 unique postcards. He decided to sell half his collection for $15 per postcard. After he has successfully sold his postcards he decided to spend all the earned money to buy new postcards for $5 each. How many postcards does Bernie have after all his transactions?
Answer: Half of Bernie's collection means 18 * 0.5 = 9 postcards. So he was able to sell 9 postcards for 9 * 15 = $135. He decided to spend all of his money on new postcards for $5 each, so he was able to buy 135 / 5 = 27 new postcards. This means Bernie has 9 + 27 = 36 postcards after all. The answer is 36.
[Question]A jug is filled with 5 liters of water and a bucket is filled with 4 jugs. How many liters of water are contained in 2 buckets?
[Answer]4 jugs contain 4 * 5 = 20 liters of water. 2 bucket contains 20 * 2 = 40 liters of water. The answer is 40.
Q: Luke pays a school fee. His mother gave him one $50 bill, two $20 bills, and three $10 bills. His father gave him four $50 bills, one $20 bill, and one $10 bill. If his parents gave him the exact amount for the school fee, how much is the school fee?
A: Luke's parents gave him 1 + 4 = 5 $50 bills. These $50 bills amount to $50 x 5 = $250. His parents gave him 2 + 1 = 3 $20 bills. These $20 bills amount to $20 x 3 = $60. His parents gave him 3 + 1 = 4 $10 bills. These $10 bills amount to $10 x 4 = $40. Therefore, Luke's school fee is $250 + $60 + $40 = $350. The answer is 350.
Question: Lucas' father offers to pay him $2 for each window in the house that he cleans. Each floor of Lucas' house has 3 windows; Lucas lives in a 3-story house. To get Lucas to finish the job faster, his father tells him that he will subtract $1 for every 3 days that pass without Lucas finishing the job. In 6 days, Lucas finishes cleaning all the windows in the house. How much will his father pay him, in dollars?
Answer: Lucas cleans a total of 3 floors * 3 windows / floor = 9 windows. The windows cleaned earn Lucas 2 dollars each, so Lucas earns 9 windows * $2 / window = $18. For taking 6 days to clean, Lucas' father subtracts 6 days / $3 / day = $2. In total, Lucas' father will pay him $18 - $2 = $16. The answer is 16.
[Question]Carlton wears an assortment of sweater vests and button-up shirts. He has twice as many sweater vests as button-up shirts and considers each unique combination of vest and shirt to be an outfit. He owns three button-up shirts. How many outfits does Carlton have?
[Answer]Carlton has 2 * 3 = 6 sweater vests. He can wear each sweater vest with different 3 button - up shirts, so Carlton has 3 * 6 = 18 outfits. The answer is 18.
[Question]Tim had a birthday party with a clown that cost $100 an hour for 4 hours. He also rented a bounce house for half the time that cost 3 times as much an hour. Everything else for the party cost $1000. How much did his birthday cost?
[Answer]
The clown cost 100 * 4 = $400. The bounce house cost 100 * 3 = $300 per hour. He rented it for 4 / 2 = 2 hours. So it cost 300 * 2 = $600. That means the total cost was 400 + 600 + 1000 = $2000. The answer is 2000.