11 Yesterday 170 guests at a hotel called for room service, and 255 guests did not call for room service. What percentage of the guests at this hotel called for room service yesterday?
A 60%
B 15%
40%
D 85%

The percentage of the guests at this hotel called for room service yesterday is 40%

Step-by-step explanation:

We are given

total number of guests called for room services =170

total number of guests did not called for room services =255

now, we can find total number of guests

Total number of guests =(total number of guests called for room services)+(total number of guests did not called for room services)

so,

total number of guests is

=170+255

=425

now, we can find percentage

percentage of the guests at this hotel called for room service yesterday is

%

So,

The percentage of the guests at this hotel called for room service yesterday is 40%

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation: