Answered

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jason needs an 75% average in his writing class to pass. on his first 4 exams, he earned scores of 68%,72%,85% and 90% what is the minimum score Jason can earn on his fifth and final test to pass??

Sagot :

Mala388

Answer:

71%

Step-by-step explanation:

Here´s how I do average scores

68 to 90

the difference in the numbers is =

90 - 68 (just a tip, subtract the highest number from the lowest number) =

22/2 will give you 11 and the reason I do this is to compare all the other numbers

11 + 68 or 90 - 11 =

79

72 to 85

85 - 72

13/2 = 6.5

72 + 6.5 or 85 - 6.5

78.5

since grades are rounded to the nearest tenth

79 - 79

79%

so he needs a 75% average to pass

79 - 75 = 4

75 - 4 = 71

The minimum score is 71%

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