The speed of a boat in standing water is 9 km/h and the speed of the stream is 1.5 km/h. A man rows to a place at a distance of 105 km and comes back to the starting point. The total time taken by him is:
- (अ)1. 18 hours
- (ब)2. 24 hours✓ योग्य उत्तर
- (क)3. 20 hours
- (ड)4. 16 hours