On three 150point geography tests, you earned grades of 88%, 94%, and 90%. The final test is worth 250 points. What percent do you need on the final to earn 93% of the total points on all tests?

Question

On three 150point geography tests, you earned grades of 88%, 94%, and 90%.  The final test is worth 250 points.  What percent do you need on the final to earn 93% of the total points on all tests?

Steve · Answer

(88+94+90)*150+250x = 93*(3*150+250) x = 97.2 good luck with that, judging from previous scores...