Solution:
The distance between the two docks is.
2) Sail against the current for 6 hours108km, and the current speed is 3km per hour. How many kilometers per hour do you want to go back to the original place?
Solution:
Answer: Back to the original place, speed 1000 meters.
3) There are two ships, A and B, sailing in the river of 360 kilometers. It takes 18 hours for ship A to go upstream, and 10 hours for ship B to go upstream. How many hours does it take to walk the whole distance with this river?
Solution:
A: The second boat will take several hours to sail along the river.
4) The elder brother said to his younger brother, "When I was your age this year, you were only 3 years old." The younger brother said to his brother, "When I reach your age this year, you will be 15 years old." Q: How old are my brothers and sisters this year?
Solution:
A: Brother brother this year.
5) 10 years ago, my mother was seven times as old as Sean. After 15, my mother was twice as old as Sean. How old is my mother Sean this year?
Solution:
Answer this year's mom Sean.
6) Xiao Bing and his parents are 82 years old. His father is 6 years older than his mother, and her mother is 23 years older than Xiao Bing. How old are they? Solution:
A: how old are the three?
7) How many rabbits, 25 rabbits and 70 legs are there in the cage? How many chickens and rabbits are there?
Solution:
Answer: chicken and rabbit.
8) A primary school math contest, *** 15 questions, 8 points for each question, 4 points for mistakes or omissions, and 72 points for Xiao Ming. How many points did he get right? Solution:
He's right.
9) It is known that the sum of dividend, divisor, quotient and remainder is 277, quotient is 16, and remainder is 3. Find dividend and divisor.
Solution:
A: Divider.
10) Xiaoming's average score in the previous math exam was 84. This time, he will take 100 to raise the average root to 86. How many times did he take the exam?
Solution:
This is his first test.
1 1) Dig a canal of 1455 meters, and dig for three days, with an average of 285 meters per day, and the rest dig 300 meters per day. Q: How much is the canal dug every day on average?
Solution:
Answer: Dig every day on average.
12) Xiaohua scored an average of 90 points in four subjects before her foreign language scores were announced. After the foreign language scores were announced, his scores dropped by 2 points. Q: How is Xiaohua's foreign language achievement?
Solution:
How is Xiaohua's foreign language performance?
13) The sum of three consecutive integers is 18. Find three numbers.
Solution:
A: The three numbers are
14) The sum of three consecutive odd numbers is 177. Find three numbers.
Solution:
A: The three numbers are
15) is a two-digit number, and the sum of digits in the tenth place is 1 1. If you add 45 to the original number, the digits of the two digits are reversed with the tenth digit to find the two digits. Solution:
A: These two figures are
16) chickens and rabbits live in the same cage. Rabbits are more than chickens 15, * * * has 228 feet. How many chickens and rabbits are there?
Solution:
Answer: chicken and rabbit.
17) There are four brothers and sisters, the elder brother is 20 years old, the younger brother 18 years old, the elder sister 12 years old and the younger sister is 8 years old. In a few years, twice the age of a brother is equal to three times the age of a sister.
Solution:
A: Many years later.
18) 35 students carry soil, a basket of ***40 baskets, how many people carry soil? How many people carry the earth?
Solution:
A: People pick soil and carry it.
19) The father is 35 years old and the son is 1 1 year old. How many years ago my father was exactly four times as old as my son?
Solution:
A: A few years ago.
20) Xiao Gang is 8 years old and his father is 34 years old. When their total age is 72, how old are the father and son?
Solution:
A: My father is years old and my son is years old.