Question

Mrs. Washington's class has x students. 3/4 of the students like pizza, if 21 students in the class like pizza, which equation can be solved to determine the whole number of students in class?A. 21x=3/4 B. 21x=4/3C. (4/3)x=21D. (3/4)x=21

Answer 1

Option D is correct.

(3/4)x = 21

x = 28

Step-by-step explanation

There are x students in the class

(3/4) of the x students like pizza.

And this (3/4) of the x students is equal to 21 students.

In mathematical terms,

(3/4) × x = 21

(3/4)x = 21

We can go ahead and solve this

Multiply both sides by 4

3x = 84

Divide both sides by 3

(3x/3) = (84/3)

x = 28

Hope this Helps!!!