A local library, manager randomly surveys 80 patrons about type of book they borrow when they visit the library. the manager finds the 3 patrons borrow novels. if the local library has 345 patrons, approximately how many of them borrow novels when they visit the library? round your answer to the nearest whole number

1 answer

To find the approximate number of patrons out of 345 who borrow novels, we can set up a proportion using the information from the random survey.

3 patrons out of 80 borrow novels

x patrons out of 345 borrow novels

(3/80) = (x/345)

Cross multiply:

80x = 3 * 345

80x = 1035

x ≈ 12.94

Rounding to the nearest whole number, approximately 13 patrons out of 345 borrow novels when they visit the library.