We have two products X and Y. However, our machine can only be set up to process one type of product each time. The weekly demands for products X and Y are 30 and 50, respectively. The weekly production rate for products X and Y are 93 and 100, respectively. The company is using the multi-product EPQ for determining the ordering cycle. Now, the owner is considering increasing the sales for product X . Given that the capacity of the machine is fixed, The weekly demand for product X cannot exceed ______