how can we come up with the correct no. of new customers, with the data given in the book in this case?

One view of the consumption function is that workers have high propensities to consume and capitalists have low propensities to consume. To explore the implications of this view, suppose that an economy consumes all wage income and saves all capital income. Describe if the factors of production earn their marginal product, this economy reaches the Golden Rule level of capital.