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:
74 comments Page 4 of 8.

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.

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.

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

Anusha said:   5 years ago
@Sapna.

Very accurate explanation. Thanks.

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

Ahamed Kabeer said:   5 years ago
Thank you everyone for explaining this.

Baphinia kharbithai said:   2 months ago
What is the formula of boat and stream? Please explain to me.

Dr saim bhat said:   4 weeks ago
The speed of the boat is always mid-value.
The speed of the stream is the difference between upstream and downstream.
Boat speed upstream+downstream divided by 2.
The speed of the stream = upstream-downstream divided by 2.

Mani said:   1 decade ago
Here they did not mention that is/clearly not questioned that this is a boad and stream problem.

Ramakrishna said:   1 decade ago
Given that mans speed with current means mans speed+current = 15, So here current is given from which we get actual speed of man is 12.5km/hr, Then he asked against the current so the answer will be 12.5 - 2.5=10km/hr.


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