Answer:
Barber's Return on Equity (ROE) is 1.28%
Explanation:
The formula to compute the ROE of Barber is:
ROE = Net Income / Shareholder's Equity
    = $250,000 / $195,000
    = 1.28%
It is a measure of the profitability ratio which evaluates the firm ability for generating profits from investment of shareholders.
Working Note:
Shareholder Equity of Barber = Beginning capital - Withdrew amount
                         = $285,000 - $90,000
                         = $195,000