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Answer:
$4.20
Explanation:
Easy.. Do a proportion
1) 4.25 3.5
------- = --------
$5.10 x
2) cross multiply
4.25x = (5.10) (3.5)
3) Simplify
4.25x = 17.85
4) Divide 17.85 by 4.25
5) $4.20
6) Thank me :D
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