Question

walking at 4 km an hour a person reaches his office 5 minute late if he walks at 5 km an hour he will be 4 minutes too early than the distance office from his residence is

Answer 1

Answer:

3 km

Step-by-step explanation:

Earlier speed = 4 km/h

Later speed = 5 km/h

let the time be x hours.

so, according to problem,

4 * (60x+5) = 5 * (60x-4)

or, 240x + 20 = 300x - 20

or, -60x = -40

or, x = 2/3

so distance is = 4 * (2/3 + 5/60) km

= 4 * (3/4) km

= 3 km

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