Question

You are taking a physics course. There will be four tests. You have scored 86, 93, and 89 on the first three tests. You must make a total of 360 or more to get an A. What score on the last test will give you an A?

Answer 1

Test Four: 92%

Explanation:

This is basically just a simple equation. For example, 43+23+19+x=98. You would need a 92 or more to get an A in that class because when you add the four numbers (92, 93, 86, 89) you would get 360.

1. Add 86, 93, and 89.

2. Subract the total from 360.

Your equation should look something like this:

86+93+89+x=360

\/

179+89+x=360

\/

268+x=360

-268 -268

-------

x=92