- Have any questions?
- [email protected]
- Home
- A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes.
Question 1:
A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will it take to go 5 km in stationary water? A. 40 minutes
B. 1 hour
C. 1 hr 15 min
Feedback Rate downstream = (1/10x 60) km/hr = 6 km/hr.
Rate upstream = 2 km/hr.
Speed in still water = 1/2(6 + 2) km/hr = 4 km/hr.
Required time =5/4 hrs = 1(1/4) hrs = 1 hr 15 min.
Rate upstream = 2 km/hr.
Speed in still water = 1/2(6 + 2) km/hr = 4 km/hr.
Required time =5/4 hrs = 1(1/4) hrs = 1 hr 15 min.
D. 1 hr 30 min
These questions are from this test. Would you like to take a practice test?