Question

Two men a and b start from place p walking 4 km and 5 km/h respectively. how many km will they be apart at the end of 4 hr if they walk in same direction

Answer 1

it should be 4 km distance between them

Answer 2

They will be apart 4 kilometres at the end of 4 hours.

Step-by-step explanation:

Given:-

Walking speed of man a = 4 km/hour.

Walking speed of man b = 5 km/hour.

To find:- how many kilometres apart man a and man b will be after 4 hours = ?

Solution:-

Walking speed of man a = 4 km/hour. -----------(given)

Distance covered by man a after 4 hours = $4\times 4 =16$

Therefore Distance covered by man a after 4 hours = 16 km

Walking speed of man b = 5 km/hour.

Distance covered by man b after 4 hours = $5\times 4 = 20$

Therefore Distance covered by man b after 4 hours = 20 km

Now,

Distance between man a and man b = 20 - 16 = 4

Therefore man a and man b will be 4 kilometres apart at the end of 4 hours.