Question : Directions: A person starts delivering letters 3 km southwards and then turns right. He covers 4 km on this road and again turns right. He delivers letters for 3 km and completes his daily beat. Then he turns left for lunch at home which is 5 km away. How far does he have to travel to reach the post office after lunch?
Option 1: 15 km
Option 2: 10 km
Option 3: 9 km
Option 4: 8 km
Correct Answer: 9 km
Solution : Firstly, we will draw the diagram as per the given instructions –
Now, we have to find the distance the person has to travel to reach the post office after lunch.
In the figure, A is the starting point and E is the finishing point. So, AE is the distance from the starting point.
Here, AB = CD = 3 km and BC = AD = 4 km
So, AE = AD + DE
⇒
AE = 4 + 5 = 9 km
So, the person has to travel 9 km to reach the post office after lunch. Hence, the third option is correct.
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