Answer:
$6.30?
Explanation:
Take $10.50 and multiply that to .40(Move percent over two places to get a decimal) to get 4.2 and then subtract $10.50 to that and you should get 6.3.
$6.30
10.50 x 0.4 = $4.20
10.50 - 4.20 = $6.30
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