Answer:
ROE = 33.33%
Step-by-step explanation:
return on equity:

where:
Average equity

(140 + 160) / 2 = 150
return on equity : 50 / 150 = 1/3 = 0.3333 = 33.33%
The ROE measures the effectiveness of the managers to generate profit with their current net assets(equity)
This ROE of 33.33% rrepresent that for every dollar of equity the company generates 33 cents of income