There are 70 guests at a hotel that called for room service and 55 that did not call for room service what percentage of the guests called for room service

56% called for room service

Step-by-step explanation:

At a hotel,

called for room service               70 guests

Did not call room service            55 guests

Total number of guests = (70 guests + 55 guests) = 125 guests

From 125 guests, called for room service               70 guests

From 1 guest, called for room service                    70/125 guests

From 100 guests, called for room service               (70*100)/125 guests

                                                                                 = 7,000/125 guests

                                                                                 = 56%

-2

7 - 9 = -2

reversed:

-2 + 9 = 7