Question 153667
let x="percentage on 1st 100000" and let y="percentage on amount OVER 100000"


"one salesperson earned $8500 on sales of $175000" __ 100000x+75000y=8500


"another salesperson earned $14800 on sales of $280,000" __ 100000x+180000y=14800


subtracting 1st eqn from 2nd eqn __ 105000y=6300 __ dividing by 105000 __ y=.06 or 6%


substituting __ 100000x+75000(.06)=8500 __ 100000x+4500=8500 __ subtracting 4500 __ 100000x=4000
__ dividing by 100000 __ x=.04 or 4%