Let miles to be paved per year = M
AW of the system = -3000000 * (A/P, 8%,4) + 275 * M
For breakeven,
-3000000 * (A/P, 8%,4) + 275 * M = 0
275 * M = 3000000 * (A/P, 8%,4)
275 * M = 3000000 * 0.301921
M = 3000000 * 0.301921 / 275 = 3293.68 miles ~ 3294 miles (Nearest Whole number)
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