SOLUTION: lucy takes five math tests and scores and average of 71%. Her teacher decides to delete one of her tests making her new average 76%. What is Lucy's grade on the deleted test
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Question 935671: lucy takes five math tests and scores and average of 71%. Her teacher decides to delete one of her tests making her new average 76%. What is Lucy's grade on the deleted test Answer by 2897696(96) (Show Source):
You can put this solution on YOUR website! work the average problem backwards:
find what the total number of her test grades are before she takes out one test:
0.71*5 =3.55
find what the total number of her test grades are after she takes out one test:
0.76*4= 3.04
subtract the numbers you found: 3.55-3.04=0.51 or 51%
she took out the test number of 51%
