question_answer

Raj travelled from a point X straight to Y at a distance of 80 m. He turned right and walked 50 m, then again turned right and walked 70 m. Finally, he turned right and walked 50 m. How far is he from the starting point?

A) 10 m    

B) 20 m

C) 50 m                            

D) 70 m

Correct Answer: A

Solution :

The movements of Raj are as shown in figure (X to Y, Y to A, A to B, B to C). \[\therefore \] Raj's distance from the starting point             \[=XC=(XY-YC)=(XY-BA)\]             \[=(80-70)m=10\,m\]