by percent, how much greater do sales of horror books appear to be than sales of cookbooks? how much greater…

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.

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

Explanation:

Step1: Estimate from the graph

Visually, if we assume cookbook sales as a base, horror books seem to be about 25% more. For example, if we consider cookbook sales as 100 units, horror books seem to be around 125 units.

Step2: Calculate the real - difference

Let's assume cookbook sales are 52 units and horror books sales are 53 units. The percentage difference formula is $\frac{\text{Horror sales}-\text{Cookbook sales}}{\text{Cookbook sales}}\times100%=\frac{53 - 52}{52}\times100%=\frac{1}{52}\times100%\approx 2%$.

Answer:

d. There appear to be 25% more sales of horror books than cookbooks, but there are really only about 2% more.