The records of a computer retail store show that out of the 100 customers who purchased a desktop computer last month, 69 also purchased a service plan that extends the warranty for an extra year. Out of the 25 customers who purchased a notebook computer last month, 20 purchased the same service plan.

Last month, customers of the store who purchased computers were less likely to purchase the service plan, because either laptops or notebooks
%
did not purchase the service plan, whereas only laptops ot notebooks
%
of the customers who bought computers did not purchase the service plan.
Thank you for your help.

Last month, customers of the store who purchased computers were less likely to purchase the service plan, because 31% ((100 - 69) / 100) of the customers who purchased desktop computers and 20% ((25 - 20) / 25) of the customers who purchased notebook computers did not purchase the service plan.

To better understand the question, let's break it down into parts:

1. How many desktop computer customers purchased the service plan?
The given information states that out of 100 customers who purchased a desktop computer, 69 of them also purchased the service plan.

2. How many notebook computer customers purchased the service plan?
The given information states that out of 25 customers who purchased a notebook computer, 20 of them also purchased the service plan.

3. Which customers were less likely to purchase the service plan, desktop or notebook computer customers?
The information provided states that "last month, customers of the store who purchased computers were less likely to purchase the service plan because either laptops or notebooks" (I assume it means either laptops or desktops) "did not purchase the service plan, whereas only laptops or notebooks of the customers who bought computers did not purchase the service plan."

Based on this information, we can conclude that desktop computer customers were less likely to purchase the service plan compared to notebook computer customers.

I hope this explanation helps clarify the given information and answer your question.