Answer:
$3759
Explanation:
Given that his income tax consist of a fixed amount and a variable amount which is a percentage of the excess of his income over $64000.
It means that the addition of the fixed amount to the variable amount will give his state tax income.
The fixed element is $3520.
The variable per of the income tax
= 10% * ($66390 - $64000)
= 10% *$2390
= $239
Hence total income tax = $3520 + $239
= $3759