Question

Ramesh starts from his house and walks 80 m straight towards South, takes a left turn and walks 60 m straight. How far is he from the starting point?

• A. 175 m
• B. 125 m
• C. 100 m
• D. 25 m
• E. None of these

Answer 1

The correct option is C

100 m

Suppose Ramesh starts from A. He walks 80m towards South and reaches B. At B he turns left and walks 60 m towards East and reaches C. Hence, his distance from the starting point A,

$\begin{array}{cc}AC=\sqrt{A{B}^2+B{C}^2}=\sqrt{80^2+60^2}& \sqrt{10000}=100m\end{array}$