Rajendra and Harendra start walking in opposite direction. Rajendra walked 3 km and Harendra walked 4 km. Then Rajendra turned right and walked 4 km and Harendra turned left and walked 3 km. How far is each from the starting point ?

Options

A. 4.5 km
B. 6 km
C. 8 km
D. 5 km

Answer

D

Explanation

0 = Starting Point
P = End Point of Harendra
Q = End point of Rajendra

The movements of Harendra and Rajendra are as shown in Fig. i.e. 0 to A & A to P and 0 to B & B to Q respectively.
Therefore, the required distance from the starting point.
`O=OP=OQ=sqrt(4^2+3^2)=sqrt(25)=5km`