IBPS RRB Officer Scale 1 Model Paper 12

Two places Chandil and Ichagarh are 300 km apart. A river flows at a speed of 5km/ hr from chandilto ichagarh. Lakshya and Rupu started from chandil and ichagarh towards each other and their speedis 25 km/ hr and 15km/ hr respectively in still water. When will they meet for second time if Lakshya returned back to chandil immediately after reaching Ichagarh?