Q: Frank's laundry detergent is double concentrated and will wash 80 loads of laundry. His detergent is usually $25.00 a bottle but they're having a sale. If he buys 2 bottles, both bottles will drop to $20.00 a bottle. How much does he spend, in cents, per load of laundry, if he buys 2 bottles of detergent?
A: If he buys 2 bottles, the price drops to $20.00 per bottle so they cost 2 * 20 = $40.00. He can get 80 loads of laundry per bottle and he bought 2 bottles so that's 80 * 2 = 160 loads of laundry. The detergent cost $40.00 and he will be able to wash 160 loads of laundry so each load costs 40 / 160 = $0.25. The answer is 25.
Question: The total number of lions in a park is twice the number of leopards in the same park. The number of elephants is half the combined number of lions and leopards. Calculate the total population of the three animals in the park if the number of lions is 200.
Answer: If there are 200 lions in the park, which is twice the number of leopards in the park, there are 200 / 2 = 100 leopards in the park. The total population of lions and leopards in the park is 200 lions + 100 leopards = 300. The number of elephants in the park is 1 / 2 the total population of lions and leopards; thus, there are 300 / 2 = 150 elephants in the park. There are a total of 150 + 300 = 450 animals in the park. The answer is 450.
[Question]Erica is getting dessert at a pie buffet where all the pies are the same size. She takes 1/5 of an apple pie and 3/4 of a cherry pie. What fraction of a whole pie did Erica take, expressed as a percentage?
[Answer]First, find a common denominator for the fractions by multiplying 5 and 4: 5 * 4 = 20. Then convert 1 / 5 to twentieths by multiplying the top and bottom by 4: 1 / 5 * 4 / 4 = 4 / 20. Then convert 3 / 4 to twentieths by multiplying the top and bottom by 5: 3 / 4 * 5 / 5 = 15 / 20. Now that the two fractions have the same denominator, you can add them: 4 / 20 + 15 / 20 = 19 / 20. Now divide 19 by 20 and multiply the answer by 100 to convert the fraction to a percentage: 19 / 20 * 100 = %95. The answer is 95.
Q: Jack has a grove with 4 trees by 5 trees. It takes 6 minutes to clean each tree. He gets help to clean the trees so it only takes half as long. How many hours did he spend cleaning trees?
A: There were 4 * 5 = 20 trees to clean. So it took 20 * 6 = 120 minutes. That is 120 / 60 = 2 hours. So he spent 2 / 2 = 1 hour cleaning. The answer is 1.
Question: Two old ladies spent the afternoon walking through Central Park. The first lady walked twice as far as the second lady. If the second lady walked four miles, what is the combined total distance, in miles, the two ladies walked?
Answer: The first lady walked 2 * 4 = 8 miles. In total, the two ladies walked 4 + 8 = 12 miles. The answer is 12.
Q: Ben's new car cost twice as much as his old car. He sold his old car for $1800 and used that to pay off some of the cost of his new car. He still owes another $2000 on his new car. How much did his old car cost, in dollars?
A:
His new car costs 1800 + 2000 = 3800 dollars. His old car cost 3800 / 2 = 1900 dollars. The answer is 1900.