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Yesterday, 170 guests at a hotel called for room service, and 255 guests did not call for room service. Which proportion could be used to determine the percentage of guests at this hotel that called for room service yesterday?

A. 170:255
B. 255:170
C. 170:425
D. 255:425

Answer :

Final answer:

To determine the percentage of hotel guests who called for room service, we should use the proportion 170:425, representing guests who called for service over all guests. However, none of the provided options correctly represents this.

Explanation:

The question is asking for the proportion that represents the percentage of guests at the hotel who called for room service yesterday. To solve this, we need to create a proportion with the number of guests who called for room service (170) over the total number of guests (170 who called + 255 who did not = 425 total). So, the correct proportion is 170:425.

However, none of the options in the question provides this proportion. If we look at the provided options, the closest one is likely 170:255, but that doesn't account for all the guests since it only includes those who called or did not call for room service, thus it does not provide the desired percentage of all guests who used the service.

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