Question: A portable computer drive has enough kilobytes of storage space to store 2000 photos. Each photo is 1.5 kilobytes in size. How many 200-kilobyte videos can it store if it already has 400 photos on it?
Answer: The drive has 1.5 * 2000 = 3000 kilobytes of storage space. It already has 1.5 * 400 = 600 kilobytes of storage space taken up. Thus, it has 3000 - 600 = 2400 kilobytes of space left. The portable drive can store 2400 / 200 = 12 200 - kilobyte videos on it with 400 photos. The answer is 12.
[Question]A man used to have 39 cows but last year 25 of them died and he sold 6 of them. This year the number of the cows increased by 24 and the man bought 43 more. His friend gave him 8 cows as a gift. How many cows does the man have now?
[Answer]Last year he had 39 cows - 25 cows - 6 cows = 8 cows. This year after the number of the cows has increased he has 8 cows + 24 cows = 32 cows. After he bought more cows he now has 32 cows + 43 cows = 75 cows. After his friend gave him cows he now has 75 cows + 8 cows = 83 cows. The answer is 83.
Q: Jake has $5000. He spends $2800 on a new motorcycle, and then spends half of what's left on a concert ticket. Jake then loses a fourth of what he has left. How much money does he have left?
A: Jake has 5000 - 2800 = $2200 left. Jake has 2200 / 2 = $1100. Jake loses 1100 / 4 = $275. Jake has 1100 - 275 = $825 left. The answer is 825.
Question: While at Wizards Park, Kate buys 3 magic wands, one for herself and two for her friends. When she returns she sells the wands to her friends for $5 more than she paid. If she collected $130 after the sale, how much money did each wand cost?
Answer: Out of 3 wands purchased, Kate sold her friends 3 wands - 1 wand = 2 wands. For 2 wands she charged $130, so for 1 wand she charged $130 / 2 wands = $65 / wand. Since she charged $5 more for each wand than she paid, Kate paid $65 - $5 = $60 for each wand. The answer is 60.
[Question]Angela is a bike messenger in New York. She needs to deliver 8 times as many packages as meals. If she needs to deliver 27 meals and packages combined, how many meals does she deliver?
[Answer]Let p be the number of packages Angela delivers and m be the number of meals. We know that p + m = 27 and p = 8m. Substituting the second equation into the first equation, we get 8m + m = 27. Combining like terms, we get 9m = 27. Dividing both sides by 9, we get m = 3. The answer is 3.
[Question]Milo is making a giant loaf of bread, and the recipe calls for pounds of eggs instead of telling him the number. He needs 6 pounds in total. He looks up online that an egg weighs 1/16 of a pound. If he needs 6 pounds of eggs, how many dozen should he buy?
[Answer]
If one egg weighs 1 / 16 of a pound then 1 pound will be made up of 1 / (1 / 16) = 16 eggs. One pound of eggs is 16 eggs so 6 pounds is 6 * 16 = 96 eggs. One dozen is 12 eggs so 96 eggs will make 96 / 12 = 8 dozens. The answer is 8.