In a contract drawn up by Booke Company, it agreed to sell and Yermack Contracting Company agreed to buy wood shingles at $950 per bunch. After the shingles were delivered and used, Booke Company billed Yermack Company at $950 per bunch of nine hundred shingles. Yermack Company refused to pay because it thought the contract meant $950 per bunch of one thousand shingles. Booke Company brought action to recover on the basis of $950 per bunch of nine hundred shingles. The evidence showed that there was no applicable custom or usage in the trade and that each party held its belief in good faith. Decision?