Regina, a cash$-$method taxpayer, borrowed $$40,000$ on July $30,$ Year $1,$ for use in her business. Regina must pay the

entire loan, with interest, on July $30,$ Year $2.$ Regina borrowed another $$10,000$ on August $30,$ Year $1,$ for use in her

business. The interest on this loan must be paid on December $30,$ Year $1.$ Assuming Regina made timely payments, she

may deduct the interest associated with how much of her debt in Year $1?$