Question

Helen has a 4 kilometer-head start on París how long will it take París to catch Helen if helen travels at 6 kilometers per hour and París traveled at 8 km per hour

Answer 1

The Solution:

Let the distance covered by Paris be x (in kilometers).

So that the distance covered by Helen x-4 (in kilometers)

So, the difference in the distance covered by Helen and Paris is

`D=x-(x-4)=x-x+4=4kilometers_{}`

Now, we shall find the difference in the time taken by Helen and Paris.