Find the ratio between the speeds of the boat and stream if the boat can travel 30 km upstream in 3 hours and the same distance downstream in 2 hours.
A
5:1
B
3:2
C
4:1
D 02:03:
Correct Option - A
Explaination
u = 10 kmph
d = 15 kmph
s = (d-u)/2 = 2.5 kmph
b = (d+u)/2 = 12.5 kmph
b:s = 5:1