The table shows which school subjects are favored by a group of students. predict the number of students out of 400 that would pick science as their favorite subject.
subject number of responses
math 6
science 3
english 4
history 7

First, add up all of the numbers.

6+4+7+3=20

3 out of the 20 students favour Science.

You need to find the total out of 400, so set up a proportion.

3/20 = x/400

To solve the proportion, you multiply 3 and 400 to get 1,200, then divide it by 20, which is 60.

So out of the 400 student, 60 favour Science.