1.

A person walks a distance from point A to B at 15 km/h, and from point B to A at 30 km/h. If he takes 3 hours to complete the journey, then what is the distance from point A to B?1. 30 km2. 25 km3. 10 km4. 15 km

Answer» Correct Answer - Option 1 : 30 km

Given:

A person walks a distance from point A to B at 15 km/h, and from point B to A at 30 km/h.

He takes 3 hours to complete the journey, 

Concept used:

Distance = velocity × time

Velocity = distance/time

Time = distance/velocity

Calculation:

Let the distance between A to B be x km

According to the question,

x/15 + x/30 = 3

⇒ 3x/30 = 3

⇒ x = 30 km

∴ The distance between A to B is 30 km.



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