A man swims downstream 28 km and upstream 12 km taking 2 hours each time, what is the speed of the ...

A man swims downstream 28 km and upstream 12 km taking 2 hours each time, what is the speed of the man in still water?

Answer/Solution

10

Steps/Work

28 --- 2 DS = 14
? ---- 1
12 ---- 2 US = 6
? ---- 1 M = ?
M = (14 + 6)/2 = 10
Answer:A

Physics Calculator / Auto Solver

A man swims downstream km and upstream km taking hours each time, what is the speed of the man in still water?

Calculated Answer

10

Step by Step Solution

In order to solve problem, you must evaluate (n₁ / n₂ + n₀ / n₂) / 2.

n₀ =	28
n₁ =	12
n₂ =	2

(n₁ / n₂ + n₀ / n₂) / 2
Evaluate n₁ / n₂ = 6
(6 + n₀ / n₂) / 2
Evaluate n₀ / n₂ = 14
(6 + 14) / 2
Evaluate 6 + 14 = 20
20 / 2
Evaluate 20 / 2 = 10
10
The answer to the problem and the result of (n₁ / n₂ + n₀ / n₂) / 2 is 10