Two methods to control mewly discovered poisonou weeds in bar-ditches on the sides of country roads in Nwe Farmendale are under consideration.Method A involves use of a 20-year life lining at an initial cost of $14.000 and an annual maintenance cost of $3 per kilometer Method B involves spraying a chemical that costs $40 per liter. One liter will treat 8 km, but the treatment must be applied four times per year. in determining the number of km per year that would result in breakeven, the variable cost for: Method B is closest to ?

add cash flow diagram if you can