Question

Consider the following graph, which details one bookstore's sales over the course of one day, divided by genre.

By percent, how much greater do sales of horror books appear to be than sales of cookbooks? How much greater are they in reality?
a. There appear to be 50% more sales of horror books than cookbooks, but there are really only about 20% more.
b. There appear to be 40% more sales of horror books than cookbooks, but there are really only about 5% more.
c. There appear to be 20% more sales of horror books than cookbooks, but there are really only about 10% more.
d. There appear to be 25% more sales of horror books than cookbooks, but there are really only about 2% more.

Answer 1

d

Explanation:

Answer 2

c. There appear to be 20% more sales of horror books than cookbooks, but there are really only about 10% more.

Explanation:

To find the answer we have to find the percentage representation of each genre. To do that, we divide the frequency by the total numbers sold:

Horror books:

`(55)/(336)=0.26 \ (or \ 26\%)`

Cookbooks:

`(54)/(336)=0.16 \ (or \ 16\%)`

So, 26% of number sold are horror books, and 16% are cookbooks. So, there are 10% horror books sold that cookbooks.

Therefore, the answer is c.