please help me solve this problem

Part B - 15 rnarlts Given: Variable cost as a 56 of sales Annual fixed costs - Total $130,000 a} What is the contribution margin ratio? b} What is the break-even point in sales dollars? c] If the company is operating at a $100,000 loss what are the dollar sales? d} If the company.r is operating at a $120,000 prot what are the dollar sales? e] If sales increase by $50,000 by how much will prot increase {or loss decrease}