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Completing the Table

Ryan took 5 tests of math and science.

Test score

1st 2nd 3rd 4th 5th

Math 40 60 60 80

Science 80 60 80 100

The fourth science test was 20 points lower than the math test, and the
mean score of the science tests is 71 points. Find the fourth test scores
of math and science.

Step 1. Find the fourth science test score.

80+60+80+ +100 = 71
5

=

Step 2. Find the fourth math test score.
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