question_answer

Zaheer travelled from a point X straight to Y at a distance of 80 metres. He turned right and walked 50 metres, 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

Correct Answer: A

Solution :

 The movements of Zaheer are as shown in figure (X to Y, Y to A A to B, B to C).                                                                                                               \[\therefore\] Zaheer's distance from the starting point                                           \[=\text{XC}=\left( \text{XY}-\text{YC} \right)=\left( \text{XY}-\text{BA} \right)\]                                                            \[=\left( \text{8}0-\text{7}0 \right)\text{m}=\text{1}0\text{m}.\]