Q: Peter has 15 birds. 1/3 are ducks. The rest are chickens and require special feed that costs $2 per bird. How much does it cost to feed the chickens?
A: 2 / 3 of the birds are chickens because 1 - (1 / 3) = 2 / 3. He has 10 chickens because 15 x (2 / 3) = 10. It will cost $20 to feed them because 10 x 2 = 20. The answer is 20.
Question: A school library has 120 books. Each student needs 5 books for their classes. The library was able to help 4 students on the first day of school, 5 students on the second day and 6 students on the third day. How many students can the library help out on the fourth day of school?
Answer: On the first day, the library used 4 students * 5 books = 20 books. On the second day, the library used 5 students * 5 books = 25 books. On the third day, the library used 6 students * 5 books = 30 books. On the fourth day, the library had 120 books - 20 - 25 - 30 = 45 books remaining. The library can help 45 books / 5 books = 9 students on the fourth day. The answer is 9.
[Question]Samson is going to another town which is 140 km away. He will use his car that uses ten liters of gasoline for a distance of 70 km. How many liters of gasoline will Samson need for a one-way trip?
[Answer]Samson will need 140 km / 70 km = 2 ten liters of gasoline for a one - way trip to a town. Therefore, he will need a total of 2 x 10 liters = 20 liters of gasoline. The answer is 20.
Q: Ellie takes her little brother down to the pond to teach him how to skip stones. After he takes his first throw, she gives him pointers to improve his technique. His second throw skips two more times across the water than his first. His third throw skips twice as many times as his second. His fourth throw skips 3 fewer times than his third throw. His fifth throw skips one more time than the fourth throw. If his fifth throw skipped 8 times across the water, how many skips did he make in total between all of his throws?
A: His fourth throw made 8 - 1 = 7 skips. His third throw made 7 + 3 = 10 skips. His second throw made 10 / 2 = 5 skips. His first throw made 5 - 2 = 3 skips. The total number of skips is 8 + 7 + 10 + 5 + 3 = 33 skips. The answer is 33.
Question: A hurricane is approaching the southern coast of Texas, and a rancher is planning to move 400 head of cattle 60 miles to higher ground to protect them from possible inland flooding that might occur. His animal transport truck holds 20 head of cattle. Traveling at 60 miles per hour, what is the total driving time, in hours, it will take to transport all of his cattle to higher ground?
Answer: Given the limited capacity of his transport vehicle (20 head of cattle), the 400 head of cattle will require 400 / 20 = 20 trips using his transport vehicle. Traveling to the site at 60 mph for 60 miles it will take 60 / 60 = 1 hour to travel one - way. Since each trip requires driving to and returning from the relocation site, each complete round trip will take 2 * 1 = 2 hours. Thus, 20 complete trips will take 20 * 2 = 40 hours of driving time. The answer is 40.
Q: The largest frog can grow to weigh 10 times as much as the smallest frog. The largest frog weighs 120 pounds. How much more does the largest frog weigh than the smallest frog?
A:
To find the weight of the smallest frog, 120 pounds / 10 = 12 pounds for the smallest frog. The difference is 120 - 12 = 108 pounds. The answer is 108.