Answer: The flash drive costs $26.90 and the printer costs $198.60
Explanation:
If F is the price of the flash drive and P the price of the printer.
We know that:
F + P = $225.50
We also know that F = P - $170.70
where in the prices the taxes are included.
now we can replace the second equation into the first one.
F + P = P - $170.70 + P = $225.50
2P = $224.50 + $170.70 = $53.80
P = $26.90
and now
F = $225.50 - $26.90 = $198.60