If a man sells a chair at$285,then the loss percent is5%.fin

Let $ y be the cost of the chair.
y X ( 1 - 5% ) = 285
y = 300
So the cost of the chair is $ 300 .

New selling price :
285 X ( 1+20% )
= $ 342

The profit persentage :
( 342 - 300 ) / 300 X 100%
= 42 / 300 X 100%
= 14 %

So his profit percent is 14% if he increases the selling price by 20%