Jawaid buysa desk for rs 15000 and a chair for rs 5000 a few months later he sell the desk for 15500 and the chair for rs 1000 what is the overall profit or loss on the sale ? calculate the profit/loss percentage

Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?