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

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%

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

The total number of guests calling for room services is 170.

The total number of guests who did not call for room services is 255.

We need to determine, what percentage of the guests at this hotel called for room service yesterday.

The percentage can always be calculated on the whole number, thus to find the percentage we need to find the total number of guests.

The percentage can be formulated below:

So,

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

To know more about it, please refer to the link:

link

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

it is 10.6 according to my calculations