A consumer group needs information on the relative costs of two systems for hot water heaters for residential use. A solar hot water heater can be purchased for $600 which will cost $1.00 per 1,000 gallons of hot water produced After an expected 20 year lifespan, it has it has a 12 yearlife with no salvage value and it is expected to cost $2,00 per 1,000 gallons produced 9. a salvage value of $50. An electric hot water heater only costs $100, but a) Using break-even analysis and an interest rate of 8% per year, find point in terms of gallons of hot water needed per year the break-even