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

heya

here is ur answer

♦ according to the data provided :-

↪ let the number of students in the math class = X


↪ given that 20 students have brown hair.

↪ 80 % of the total class

♦ then the equation would be :-

80/X * 100= 20

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Answer 2

let's consider total number of students equal to T
Now let's denote total number of students with brown hair with B and denote percentage of the total number of students with brown hair with P

So to find out percentage of total number of students with brown hair we can write

(B/T)x100 = P

But it is given that B= 20 and P = 80
So,
(20/T)x100= 80
T= (20/80)x100 = (1/4)x100 = 25