A start walking from a place at a uniform speed of 3 kmph in a particular direction.

A start walking from a place at a uniform speed of 3 kmph in a particular direction. After half an hour, B starts from the same place and walks in the same direction as A at a uniform speed and overtakes A after 1 hour 48 minutes. Find the speed of B.

Quiz

Answer/Solution

3.6 kmph

Steps/Work

Distance covered by A in 30 min = 1 Km
B covers extra 1km in 1 hour 48 minutes (9/5 hr)
i.e. Relative speed of B over A = 1/(9/5) = 5/9
So the speed of B = Speed of A + 5/9
= 3 + 5/9
= 3.55
Answer B

Physics Calculator / Auto Solver

A start walking from a place at a uniform speed of kmph in a particular direction. After half an hour, b starts from the same place and walks in the same direction as a at a uniform speed and overtakes a after hour minutes. Find the speed of b.

Calculated Answer

3.5555555555556

Step by Step Solution

In order to solve problem, you must evaluate n0 + n1 / ((n2 + 60) / 60).

n0 =3
n1 =1
n2 =48