2. Tim can live another 3 years with a life quality weight of 0.6 if he uses standard treatment that costs $100k. However, if he uses a new treatment at the cost of $200k, he will live another 4 years. And his life quality weight will be 0.9, 0.8, 0.7 and 0.6 in the 1st, 2nd, 3rd and 4th year.
1). Calculate the increase (change) in QALYs if Tim uses the new treatment.