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a librarian put 30 books back on the shelves before lunch. of the books, 10 were non-fiction. what is the ratio of the number of non-fiction books to the total number of books the librarian put away before lunch?
a. 1 to 3
b. 1 to 2
c. 2 to 1

1 to 3

Step-by-step explanation:

Out of 30 books, 10 were non fiction. So the ratio of non fiction books to total number of books is 10 to 30

10 to 30 can be simplified to 1 to 3.

30

step-by-step explanation:

idk

i hope i

the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

have a nice day!