Question

There are 20 students in a math class who have brown hair. This represents 80 percent of the students in the class. Which equation can be used to find the total number of students in the math class?

Answer 1

Answer:

The equation to finding the total number of students x in the class is

$[tex]\frac{20}{x}=0.8$

The solution to this equation is x=25.

Step-by-step explanation:

We will call the total number of students in the class x.

We know that 20 of the students make up 80% of the class. Thus,

$\frac{20}{x}=0.8 \\ 20=0.8 \cdot x\\\frac{20}{0.8}=x\\25=x$

Answer 2

Answer:25

Step-by-step explanation: