A girl goes from A to B with speed 60 km/hr and return from B to A with speed 30 km/hr. If whole journey takes 5 hours, then what is the distance between A and B?

Question

Question

This question was previously asked in

SSC MTS (2022) Official Paper (Held On: 12 May, 2023 Shift 1)

Answer 1

Given:

A girl goes from A to B with a speed 60 km/hr.

Return from B to A with a speed 30 km/hr.

Concept used:

Distance = Speed × Time

Formula used:

Average speed = 2xy/(x + y) { x and y are speed covering same distance}

Calculation:

As per the formula, the Average speed is,

⇒ 2 × 60 × 30 \ (60 + 30)

⇒ 3600 / 90

⇒ 40 km/h

So, Total distance covered

⇒ 40 × 5

⇒ 200 km

Required distance is 200 / 2 = 100 km

The distance between A and B is 100 km.

Download Solution PDF