__Ask a Question__

### Question Asked by a Student from EXXAMM.com Team

** Q 2244178053. ** A boat can travel 15 km downstream in 18 min. The ratio of the speed of the boat in still water to the speed of the stream is 4 : 1. How much time will the boat take to cover 10 km upstream?

**IBPS-PO 2017 Mock Mains **