The maximum possible number is 98, and I am trying to solve this problem.
5] Suppose 100 million people consume one resource a year, 1 1 100 million people need 9900 resources (original resources and newly generated resources in 90 years), and 9 billion people need 18900 resources in 2 10 years.
(original resources and new resources generated by 2 10), 75 new resources are generated every year. In order for human beings to continue to reproduce, then the earth can feed up to 7.5 billion people.
Step: 244/4=6 1 (person)
6 1 person has 60 intervals, so it is 6 1- 1=60.
60*2= 120 (m)
60* 15- 120=780 (m)
⒘ Step: Take the food a sheep eats every day as a unit. 100*200=20000 units.
150 *100 =15000 units
The length of Japanese grass is (20000-15000)/(200-100) = 50 units.
Grass quantity: 20000-50*200= 10000 units.
Then make an equation:
10000+50X=250X
X=50
If you graze 250 sheep, you can eat for 50 days. It is wrong to graze so much, because it will lead to grassland desertification.
You can graze up to 50 sheep.
⒙ This topic is the simplest! I can only climb 2 meters every day for the first two days, and I climbed up directly on the third day, and I won't slide down again. (3-2)*2+3=5.
Finally, I did all these questions well. After all, I am only in the sixth grade, not a teacher. I don't know if you can understand my problem-solving ideas.
Finally, I hope you can read my answer, do it yourself, digest it and really understand the topic!