A survey of students attending Middle school North revealed that 18 of 24 students have many students do not have a touch screen phone?

Question

asked Mar 15, 2023 34.2k views

2 Answers

Schtolc · Answer 1 · 2023-03-20T05:58:08+0000

Question:

Solution:

Step 1: Calculate the number of students that touch screen phone in a sample of 816 students:

Let's denote by x the number of students that touch screen phone and consider the following diagram :

By cross-multiplication, solve for x:

$x\text{ = }((816)(18))/(24)=612$

Step 2: Subtract the obtained value of step 1 to 816

$816-612\text{ = 204}$

then, we can conclude that 204 students do not have a touch screen phone.