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4 years ago

11

Cindy averaged 88 on the first four tests of the year in her Algebra 2 class. If she scores a 95 on each of the remaining tests,

her average will be a 93. Determine how many tests are left in the year.

1 answer:

Dvinal [7]4 years ago

3 0

Let x represent the number of remaining tests this year.

[4(88) + x(95)]/(4 + x) = 93
352 + 95x = 372 + 93x
2x = 20
x = 10

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