The school library has bought three new books, among which the number of story books accounts for one third of the number of categories, the number of science fiction books is one fifth of the other two, and there are 150 comic books. How many copies of these three books have you bought?

Solution:

Because the number of science fiction books is one fifth of that of the other two books.

So science fiction is 0/6 of the total number of 65438+.

So the total number =150 ÷ (1-kloc-0//6-1/3) = 300 copies.

I am a teacher. Thank you for your adoption.