Answer:
$9.20
Step-by-step explanation:
Original base cost@ import = $16
Import duty (tax) = $3.20
Store price increase = $6.00
Hence Customer pays:
Original base cost@ import + import duty + store price increase
= $16 + $3.20 + $6.00
= $25.20
Amount more that customer pays (compared to base cost)
= Price Customer pays - Original base cost
= $25.20 - $16
= $9.20