The deli in front of the school sells 36 cheese sandwiches a day, which was 40% of the total number of sandwiches sold that day. What was the total number of sandwiches sold that day?

The total number of sandwiches sold that day was 90.

Step-by-step explanation:

Given that the 36 cheese sandwiches sold represent 40% of the total sandwiches sold on that day, to obtain the total number of sandwiches sold the following calculation must be made:

40 = 36

100 = X

((100 x 36) / 40) = X

3600/40 = X

90 = X

Therefore, the total number of sandwiches sold that day was 90.

4 + 5 7/9= 9 7/9

step-by-step explanation:

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.