1. matrix algebra

hi, i'm having some trouble coming up with the 2nd function for this word problem:

a manufacturer makes 2 products, a and b. for each unit of a sold, the profit is 8 dollars, and for each of b, the profit is 11 dollars. it's been found that 25% more of a can be sold than of b. next yr the manufacturer wants a total profit of $42000. how many units of each product must be sold? i found the profit function, but not sure how to go about for the 25% more of a than b part. thanks! 2. Originally Posted by finalfantasy hi, i'm having some trouble coming up with the 2nd function for this word problem: a manufacturer makes 2 products, a and b. for each unit of a sold, the profit is 8 dollars, and for each of b, the profit is 11 dollars. it's been found that 25% more of a can be sold than of b. next yr the manufacturer wants a total profit of$42000. how many units of each product must be sold?

i found the profit function, but not sure how to go about for the 25% more of a than b part. thanks!
that last piece of information is to give you a relationship between A and B

if you call the number of units of product A sold, a
and the number of units of product B sold, b

then this says, a = 1.25b

can you continue?