Write a word problem that involves comparing unit rates

Last month, my house used 1,740 kilowatt-hours of electrical energy,
and the part of my bill that charged for the electricity was  $226.20 .

For the same month, my brother in Boston used 1,175 kilowatt-hours
of energy, and the energy part of HIS bill was $199.75 .

Which of us gets the better deal on his electrical energy ?

First subtract 10 from both side
y^2+6y-16=0
(y+8)(y-2)=0
-8 and 2