from estonian math state exam, please help
An agreement was signed with a small company to manufacture at least 160 products, and the original price paid for one manufactured product was fixed. In addition, a payment method was agreed upon in case the entrepreneur succeeds in making more products in the same period of time. In this case, he will be paid 8 euros and 50 cents for the 161st product, and then for each subsequent product 50 cents more than the previous one. By manufacturing 180 products, the entrepreneur would earn 1385 euros.
1. Find the original price of one product.
2. How much will the entrepreneur be paid for the production in total if the price of the last product is 4 times higher than the original price?