question_answer

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

A) 10 metres     

B) 20 metres

C) 50 metres  

D)               70 metres

E) None of these

Correct Answer: A

Solution :

Explanation Option [a] is correct. The movements of Raj are as shown in figure (X to Y, Y to A, A to B, B to C). .. Raj?s distance from the starting point \[= XC = \left( XY - YC \right) = \left( XY - BA \right) = \left( 80 - 70 \right) m = 10 m.\]