there are 12 students in a class who are preforming at the school concert . this represents 40% of the class how many students are in the class?

There are 30 students in class

Step-by-step explanation:

Let x be the total number of students

Then according to the given statement,

40% of x is 12

this can be expressed mathematically as:

we can simply use this equation to find the total number of students

Dividing both sides by 0.40

Hence,

There are 30 students in class

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24