shine sold two tables at 9900 rupees each. he got 10% profit in one sale and 10% loss in the other. did the total sale result in a profit or loss? what percentage? please give me step by step explanation​

Aresearcher believes increased perceived control influence the well-being of residents at a nursing home. to test this , she allowed one group of residents to have control over their daily lies, (where to eat etc) . the other group of 5 residents had these deceisions made by staff. the resident's feelings of well-being were measured on a 10 point scale at the end of a one month trial period. is there a difference on well-being?