Assume That Jessie and Lester Have Formed a Contract Whereby

Assume that Jessie and Lester have formed a contract whereby Jessie agrees to deliver 10,000 dozen "Grade A Large Eggs" to be shipped in recycled paper cartons.A shortage of paper makes paper cartons much more expensive,so Jessie uses styrofoam cartons and ships the eggs.Lester is entitled to cancel the contract based on this deviation of terms in the contract.