[Question]Gervais drove an average of 315 miles for 3 days. Henri drove a total of 1,250 miles over one week. How many miles farther did Henri drive?
[Answer]Gervais drove 3 * 315 = 945 miles. 1250 - 945 = 305 miles. Henri drove 305 miles farther. The answer is 305.
Q: Cameron is printing her thesis in the school library and has 400 A4 pieces of paper. If 40% of the papers did not print out up to her desired quality and she separated them as invalid, calculate the total number of valid documents.
A: If she had 400 papers, the total number of documents she separated as invalid is 40 / 100 * 400 pages = 160 pages. The number of valid documents is 400 pages - 160 pages = 240 pages. The answer is 240.
Question: John drinks 1.5 gallons of water a day. How many quarts does he drink a week?
Answer: He drinks 1.5 * 4 = 6 quarts a day. That means he drinks 6 * 7 = 42 quarts a week. The answer is 42.
[Question]Kim spends $25,000 to open a store. She makes $4000 a month in revenue and her expenses are $1500 a month. How long would it take to pay back the cost to open the store?
[Answer]Her profit is 4000 - 1500 = $2500. So it takes 25000 / 2500 = 10 months to make back the money. The answer is 10.
Q: Frank went to a shop to buy some food for his breakfast. He bought 10 buns for $0.1 each, two bottles of milk, for $2 each, and a carton of eggs, which was three times more expensive than one bottle of milk. How much did Frank pay for his breakfast shopping?
A: For the buns, Frank paid 10 * 0.1 = $1. He bought two bottles of milk, for $2 each, so he paid for them 2 * 2 = $4. One carton of eggs was three times more expensive than one bottle of milk, so it cost 3 * 2 = $6. So for all his shopping Frank had to pay 1 + 4 + 6 = $11. The answer is 11.
Question: 4/5 of the Easter eggs are blue and 1/5 are purple. Half the purple eggs have five pieces of candy each, and 1/4 of the blue eggs do. The rest of the eggs only have one piece of candy. If Jerry opens one egg at random, what is the percentage chance he'll get 5 pieces of candy?
Answer:
First find the probability Jerry gets a blue egg with 5 pieces of candy by multiplying the independent probabilities: 4 / 5 * 1 / 4 = 1 / 5 = 20%. Then find the probability he gets a purple egg with 5 pieces of candy the same way: 1 / 5 * 1 / 2 = 1 / 10 = 10%. Then add the probabilities of the two possible ways to get 5 pieces of candy to find the total probability: 20% + 10% = 30%. The answer is 30.