Answer the following questions, listing the necessary reasoning and algorithmic steps:

1. A good, the value of which consists of 60c + 20v + 20m (in dollars) (1) What is the cost of production of this good? (2) How much of the newly created value of workers' labor is contained in this good?

2. A garment is worth 100 yuan, which contains 15 yuan of the cost of plant, machinery, and equipment apportioned to this item; 20 yuan of the cost of fabric and other supplies; 5 yuan of utilities, etc.; and 20 yuan of labor costs. (1) Write down the value of the dress. (2) The length of the working day in the factory where this garment is produced is 12 hours. Then what is the remaining labor time per day?

3. The length of the workday is 12 hours and the original rate of surplus value is 100%. Suppose the value of labor is reduced to 2/3 of its original value, and the length of the workday is reduced to 10 hours. (1) Is this change in absolute surplus value production or relative surplus value production? (2) What is the rate of surplus value after the change?