SOLUTION: On three 150-point 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 point

Question 1008510: On three 150-point 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?
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
The total points for all four tests would be 150+150+150+250 = 700 points.
To earn 93%, a student needs (.93)(700) = 651 points.
So far you have earned .88(150)+.94(150)+.90(150) = 408 points
You would need
651 - 208 = 243 out of 250 for 93% (good luck!)
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