Mrs Jennings shares £484 between her two sons, Alan and Bob.
She shares the money in the ratio of her sons' ages.
The combined age of her two sons is 44 years.
Alan is 6 years younger than Bob.
Work out how much money each son gets.
B
A

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?