Question 119
A man starts from a point and moves 3 km North, then turns to West and goes 2 km. He turns North and walks 1 km and then moves 5 km towards East. How far is he from the starting point?
Solution
Let the man started from point A and travelled north to reach B for 3 km, then turned west towards point C after travelling 2 km, then again travelled north for 1 km and finally stopped at point E.
Thus, $$(AE)^2 = 4^2+3^2$$
=> $$(AE)^2=16+9=25$$
=> $$AE=\sqrt{25}=5$$ km
=> Ans - (D)
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