Answer:
$16.60
Explanation:
4 x 0.85 = $3.40
20 - 3.40 = 16.6
Dave should get back $16.60 in change.
$16.6 dollars back
The answer is $16.6 because 0.85 times 4 is 3.4 and 20 minus 3.4 is 16.6
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