There are 4 lunch choicea ina school cafeteria salad, pizza, spaghetti, and sub sandwiches the percentage of students that chose salad is 15% if 45 students chose salad, what is the total number of students that ate lunch

We can set this up as an equation
We know that there are 15% (0.15) of the total number of students (X) is 45
So, if we multiply X by 0.15, we get 45

X(0.15)=45

In order to get X alone, we can divide both sides by 0.15

X=300

So, there are 300 total students

Hint: find the perentage of 15% of 45, then that is your answer
do 0.15 times 45

Answer d; a supplementary angle = 180°, so if that angle = 150°, y would = 30°.