Question: Martin owns a farm with hens. 10 hens do lay 80 eggs in 10 days. Martin decided to buy 15 more hens. How many eggs will all hens lay in 15 days?
Answer: If 10 hens lay 80 eggs, then 1 hen lays 80 / 10 = 8 eggs in 10 days. That means one hen is laying 8 / 2 = 4 eggs in 5 days. So in 15 days, 1 hen will lay 3 times more eggs, so 4 * 3 = 12 eggs. All hens in total will then lay 25 * 12 = 300 eggs in 15 days. The answer is 300.
[Question]James takes a spinning class 3 times a week. He works out for 1.5 hours each class and burns 7 calories per minute. How many calories does he burn per week?
[Answer]He works out for 1.5 * 60 = 90 minutes per class. So he burns 90 * 7 = 630 calories per class. That means he burns 630 * 3 = 1890 calories per week. The answer is 1890.
Q: Josh had 100 gummy bear candies. He decided to give his 3 siblings 10 candies each. Then he gave half of the remaining candies to his best friend. If he only wants to eat 16 gummy bear candies, how many candies are left to be shared with others?
A: Josh gave a total of 3 x 10 = 30 candies to his siblings. He was then left with 100 - 30 = 70 candies. He gave 70 / 2 = 35 candies to his best friend. So he had 70 - 35 = 35 candies left. Since he only wants to eat 16 candies, there are still 35 - 16 = 19 candies left to be shared with others. The answer is 19.
Question: Sabrina gave 10 cookies to her brother. Her mother gave Sabrina half the number of cookies she gave her brother. Then Sabrina gave two-thirds of her cookies to her sister. If Sabrina had 20 cookies at the start, how many cookies are left with her?
Answer: Sabrina had 20 - 10 = 10 cookies left after giving 10 cookies to her brother. Sabrina's mother gave her 10 / 2 = 5 cookies. So, she had 10 + 5 = 15 cookies then. She gave 15 x 2 / 3 = 10 cookies to her sister. Therefore, she only has 15 - 10 = 5 cookies left. The answer is 5.
[Question]Susan, Arthur, Tom and, Bob are siblings. Arthur is 2 years older than Susan, and Tom is 3 years younger than Bob. If Bob is 11 years old, and Susan is 15 years old, how old are all four family members in total?
[Answer]Arthur is 2 years older than Susan, so he is 15 + 2 = 17 years old. Bob is 11 years old, so Tom is 11 - 3 = 8 years old. So in total these four family members have 11 + 15 + 17 + 8 = 51 years. The answer is 51.
[Question]Stuart is going on a cross-country trip and wants to find the fastest route. On one route the total distance is 1500 miles and the average speed is 75 MPH. On the second trip, the total distance is 750 but the average speed is 25 MPH. How long does his trip take if he goes on the fastest route?
[Answer]
The first route will take 20 hours because 1,500 / 75 = 20. The second route will take 30 hours because 750 / 25 = 30. The fastest route takes 20 hours because 20 < 30. The answer is 20.