Question

David Dawson earned $4,290 but paid 6.2% in social security taxes and 1.45% of his earnings in Medicare taxes. What was his net earnings after paying social security and Medicare taxes

Answer 1

=(6.2% + 1.45%)($4,290)
=7.65%($4,290)=(7.65*4,290)/100
= $328.185 pay for taxes

then subtract this amount to the real one:
$4,290 - $328.185 = $3961.815