In calm water, a boat can cruise at a speed of 13 km/hr. Calculate the time it took the boat to travel 68 kilometres downstream at a speed of 4 km/hr.
A. 2 hours
B. 3 hours
C. 4 hours
D. 5 hours
Answer:C
In calm water, a boat can cruise at a speed of 13 km/hr. Calculate the time it took the boat to travel 68 kilometres downstream at a speed of 4 km/hr.
A. 2 hours B. 3 hours C. 4 hours D. 5 hours
Explanation: 13 + 4) km/hr = 17 km/hr speed downstream,The time it takes to go 68 kilometres downstream is 68/17 hours, or 4 hours.