An engineer must choose between two materials for an underground storage tank. A steel tank costs $$246,000$ and is expected to last $15$ years. A fiberglass tank costs $$295,000$ and is expected to last $30$ years. Neither tank has a salvage value at the end of its useful life. Determine the MARR below which the FRP tank is preferred. Express your answer in $\%($not a decimal$)$ to the nearest $0\mathrm{.}1\%.$