Two boys starts from the same place walking at the rate of 4 kmph and 5.5 kmph respectively in the ...

Two boys starts from the same place walking at the rate of 4 kmph and 5.5 kmph respectively in the same direction. What time will they take to be 10.5 km apart?

Answer/Solution

Steps/Work

Explanation:
Relative speed = 5.5 - 4 = 1.5 kmph (because they walk in the same direction)
distance = 10.5 km
time = distance / speed=10.5/1.5=7 hr
Answer :C

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Two boys starts from the same place walking at the rate of kmph and kmph respectively in the same direction. What time will they take to be km apart?

Calculated Answer

Step by Step Solution

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

n₀ =	4
n₁ =	5.5
n₂ =	10.5

n₂ / (n₁ - n₀)
Evaluate n₁ - n₀ = 1.5
n₂ / 1.5
Evaluate n₂ / 1.5 = 7
7
The answer to the problem and the result of n₂ / (n₁ - n₀) is 7

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