Q31
If the speed of a boat in still water is 20km/hr and the speed of the current is 5km, then the time taken by the boat to travel 100 km with the current is?
A.
2 hours
B.
3 hours
C.
4 hours
AnswerD.
7 hours
Answer: Option C
Solution
Answer: Option C
Solution:
Relative speed = 20 + 5 = 25 km/hrTime = = 4 hours