if i get a 75% on a test that only takes up 40% of my grade and i have a 84 what garde would i have now

To calculate your grade after the test, you need to consider the weightage of both the test and your current grade.

If the test is worth 40% of your grade and you scored 75% on the test, then the impact of the test on your overall grade is 75% * 40% = 30%.

To find the remaining portion of your current grade, subtract the test impact from 100%: 100% - 30% = 70%.

Now, since your current grade is 84, multiply that by its weightage: 84 * 70% = 58.8.

Adding the test score (30%) to your current grade (58.8%) gives you your total grade.

So, your total grade would be 30% + 58.8% = 88.8%.