Final answer:
After calculating the unit price for both white and black chairs, we find that the black chairs, at $20.20 each, have a lower unit price than the white chairs, at $20.22 each.
Step-by-step explanation:
To determine which color chair has a lower unit price, we need to calculate the price per chair for both white and black chairs.
For the white chairs, the calculation is $141.54 divided by 7 chairs, giving us a unit price of $141.54 / 7 = $20.22 per chair.
For the black chairs, the calculation is $101 divided by 5 chairs, resulting in a unit price of $101 / 5 = $20.20 per chair.
Since $20.20 is less than $20.22, the black chairs have a lower unit price.