Aptitude - Boats and Streams - Discussion

Discussion Forum : Boats and Streams - General Questions (Q.No. 2)
2.
A man's speed with the current is 15 km/hr and the speed of the current is 2.5 km/hr. The man's speed against the current is:
8.5 km/hr
9 km/hr
10 km/hr
12.5 km/hr
Answer: Option
Explanation:

Man's rate in still water = (15 - 2.5) km/hr = 12.5 km/hr.

Man's rate against the current = (12.5 - 2.5) km/hr = 10 km/hr.

Discussion:
72 comments Page 2 of 8.

Meenakshi said:   4 years ago
What is still water and current speed?
(2)

Ahamed Kabeer said:   4 years ago
Thank you everyone for explaining this.

Samyakjain said:   5 years ago
Thank you so much @Balaji.

Anusha said:   5 years ago
@Sapna.

Very accurate explanation. Thanks.

Punni said:   5 years ago
Thank you so much @Balaji.
(1)

Vaishnavi said:   5 years ago
Thanks @Sapna.
(1)

Aanchal said:   5 years ago
Su = ?
Sd = 15km/hr,
Sd = x+ y.
x+ y = 15km/hr,
x + 2.5 = 15km/hr,
x = 12.5.

x = speed of man in still water.
Sd = x -y.
15- 2.5 = 10km/hr.
(1)

Nilesh said:   6 years ago
4 answer 6 respectively. @Nihal.
And well explained by @Mani.
Thanks.

Nihal said:   6 years ago
A boat has speed along current of 5 km/h and speed against current is 1 km/h. What will be speed of boat and speed of Current? please give me the solution.

Praveen said:   6 years ago
MS with CS = 15.
CS = 2.5,
MS = 15-2.5= 12.5.

Against means Opp direction so it is Upstream For this MS - CS so 12.5 -2.5 = 10.


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