Analysis:
The total number of books taken is "1", the number of girls is110, and the number of boys is115.
Then the total number of people is:110+115 =1/6.
According to the total number of books ÷ the number of boys = the average number of books shared by everyone, the formula is:1÷ (110+115), and the answer can be obtained accordingly.
Answer:
Solution:
1÷( 1/ 10+ 1/ 15)
= 1÷ 1/6
=6 (Ben);
Answer: Now these notebooks are distributed to all students in the group on average, and each person can get 6 copies.
Comments:
The key to this problem is to regard the total number of books as the unit "1", and then express the total number of people who answered according to the engineering question.
Solution: Because: If these notebooks are distributed to girls equally, each girl will get 10; If these notebooks are distributed to boys equally, each boy will get 15 copies.
Therefore, the total number of notebooks is a multiple of 10 and 15.
The least common multiple of 10 and 15 is: 30.
Suppose: there are 30 notebooks 1 * * *.
Male: 30a÷ 10=3a.
The female students are: 30a÷ 15=2a.
Total: 3a+2a=5a.
Total number of laptops: 30a
Average distribution per person: 30a÷5a=6 copies.
Answer: Now these notebooks are distributed to all students in the group on average, and each person can get 6 copies.
Answers from the professional mathematics team of "Mathematics in Spring, Summer, Autumn and Winter"!
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