#### Answer

$88.8$

#### Work Step by Step

$\frac{20}{100} \times (96+85+91） + \frac{40}{100} \times 86
= 88.8$
We add up the scores of the first three tests and weigh that by 20%, then weigh the score of the final test by 40% to attain our answer.

Published by
Pearson

ISBN 10:
0-32191-121-0

ISBN 13:
978-0-32191-121-6

$88.8$

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