The following information was extracted from the records of Dolphin Ltd for the year ended 30 June 20X1 Cost of equipment that was sold: $530,000 Accumulated depreciation for equipment that was sold: $310,000 Cost of equipment that was purchased: $510,000 Gain on sale of equipment: $50,000 Required: Write in the box below the net cash used for investing activities for the year ended 30 June 20X1.