Three-tenths of the books in the school library are how-to books. Of these, 0.2 deal with carpentry and 0.4 deal with electronics. Interpret what the figure 0.12 represents in this context. (1 point)
the fraction of books in the library that are how-to books on carpentry
the fraction of books in the library that are how-to books
the fraction of the how-to books that are about elther carpentry or electronics
the fraction of the books in the library that are how-to books on electronics