Question

$(x-4)^{2} - (x+4)^{2}$ Pls, Find the value of $x$ from the above Equation... 15 Points Question (No spam Or I will Report)(No spam Or I will Report)(No spam Or I will Report)

Answer 1

Answer:

In a test, you either pass or fail; 2 possible situations. If 72% of the total students passed. That means 28% of the students failed.

You now have all the ingredients in order to solve this problem. Now set up a proportion,

28/100=392/x28/100=392/x

where x represents the total number of students.

Cross multiply and you know have,

392∗100=28∗x392∗100=28∗x

Now divide 28 on both sides

(392∗100)/28=x(392∗100)/28=x

Do the arithmetic. The total number of students is 1400.