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The number of Xiaofang's original books is 4 / 5 of Xiaoming's. after the two donated 10 books, the number of Xiaofang's original books is 7 / 10 of Xiaoming's It's urgent
Let Xiaoming have X, then Xiaofang is 4 / 5x,
7/10（X-10）=4/5X-10
7/10X -7=4/5X-10
3=1/10X
30=X
Xiaofang 4 / 5x = 30,
X=24
/What is the fraction
Xiao Ming's extra-curricular books are six times as many as Xiao Fang's. If two people take away two of them, Xiao Ming's existing extra-curricular books are eight times as many as Xiao Fang's. how many books does Xiao Ming have
8x2-2=14
14/2=7
7x6=42
Xiao Ming has m extra-curricular books. If Xiao Ming gives Xiao Li a extra-curricular book, they will have as many extra-curricular books. Xiao Ming has () extra-curricular books?
Originally, there were m copies, now there are M-A copies
RELATED INFORMATIONS
- 1. Xiao Ming and Xiao Li have a total of 68 extra-curricular books. If Li lends Ming five, then Li has eight more than Ming. How many do they each have
- 2. Xiao Ming and Xiao Li, who read the most pages? Xiao Ming has read three fifths of the book, and Xiao Li has read four ninths of the book
- 3. Xiaoli and Xiaowen produce Fuwa in a toy factory. Xiaoli produces M sets a day, and Xiaowen produces 2 sets more than Xiaoli. In September, Xiaoli insisted on working overtime for 30 days, while Xiaowen worked for 25 days Q: 1. How many sets of Fuwa did they produce in September? How many more sets did Xiaowen produce than Xiaoli in September?
- 4. Xiao Li collected some stamps. She took out half of them and gave them to Xiao Jun. she had 45 left. How many stamps did Xiao Li have?
- 5. Xiao Ming, Xiao Li and Xiao Xiao Li all like to collect stamps. Each of them has 45 stamps on average. The ratio of stamps of Xiao Lu, Xiao Ming and Xiao Li is 5:7:3. How many stamps do they each have?
- 6. Xiao Ming and Xiao Li are fond of collecting stamps. Xiao Li said: if you take 2 / 5 of Xiao Ming's stamps and 4 / 7 of mine, the rest of our stamps will be equal Xiao Ming said: I collected 14 less stamps than Xiao Li. How many stamps did they collect
- 7. Xiao Li and Miss Wang collected 876 stamps. It is known that the number of stamps collected by Miss Wang is more than 12 times that of Xiao Li by 5. How many stamps do miss Wang and Miss Wang collect?
- 8. Xiao Li gave more than half of her stamps to her classmates, so there are still 28 stamps left. How many
- 9. Xiao Li and Xiao Qiang have 140 stamps in total. Xiao Li has two-thirds as many stamps as Xiao Qiang. How many stamps do Xiao Li and Xiao Qiang have
- 10. Xiaoli bought a total of 10 stamps with 60 cents and 80 cents. For 7 yuan and 20 cents, she bought a stamp with 60 cents______ I bought 80 cent stamps______ There are two
- 11. There is a batch of books that Xiaoliang can bind in 9 days and Xiaodong can bind in 20 days. How many days can Xiaoliang and Xiaodong cooperate to finish this batch of books?
- 12. There are a number of books, Xiao Ming can bind 34 in 9 days, Xiao Li can bind 56 in 20 days______ It can be loaded in one day
- 13. Xiaofang looks at Xiaoli in the direction of 50 degrees north by East, and the distance is 20 meters. Xiaoli looks at Xiaofang in what direction, and what is the distance
- 14. Xiao Ming climbs the stairs twice as fast as Xiao Li. Xiao Li has climbed to the fourth floor, and Xiao Ming has climbed to several floors
- 15. Xiao Li walked home from school, 3 kilometers an hour. When Xiao Li walked 6 kilometers, Xiao Ming started from school by bike to chase Xiao Li, It took 40 minutes to catch up with Xiaoli and find the speed of Xiaoming
- 16. There are four children kicking shuttlecock, Xiao Hong, Xiao Ming, Xiao Junping each kicked 24 times; Xiao Ming, Xiao Jun, Xiao Liping each kicked 26 times, known as Xiao Hong 22 kicks. How many did Xiao Li kick?
- 17. Xiao Li walks 40 meters per minute from the same place at the same time. After three minutes, Xiao Li is 30 meters behind Xiao Ming. How many meters does Xiao Ming walk per minute
- 18. Equation: Xiaoli and Xiaoming are on the 400 meter circular track. Xiaoli runs 220 meters per minute and Xiaoming runs 280 meters per minute. They run in the opposite direction at the same point at the same time. How many minutes do they meet? It's an equation. Don't make a mistake
- 19. A classmate said: "Xiao Li and Xiao Fang are both 1.6 meters tall, but Xiao Fang insists that her height is 7 cm higher than Xiao Li. Is this possible? Why?
- 20. The school held a rope skipping competition. Xiao Hong and Xiao Li jumped 306 times in total. The number of Xiao Hong's jumps was five times that of Xiao Li. How many times earlier were Xiao Hong and Xiao Li