11) Peter deposited 150,000 HUF for 2 years at a 4% yearly rate. His money is compounded annually. What can be withdrawn after two years if the yearly rate is the same in each year? (4 points) 12) A small plant has 6 hex head bolt maker machines with equal capabilities. With these machines the plant can produce the required amount from plain stainless steel hex head bolts in 12 days. How many more of these machines have to be working to produce the same amount of hex head bolts in 4 days? (4 points)