SOLUTION: How many persons are there in a procession which takes 80 minutes to pass a specific location on the route? The procession is moving at a uniform rate of 5km per hour and contains

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Question 983699: How many persons are there in a procession which takes 80 minutes to pass a specific location on the route? The procession is moving at a uniform rate of 5km per hour and contains 10 persons in each metre of its length.
Thanks if you choose to solve this!
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
L, length of the procession in meters

5%28km%2Fhour%29%2A%2880%2F60%29%28hours%29=L
L=5%284%2F3%29%2Akilometers

Let's change the meaning of L in the units.
Now, say L is to be in meters.
L=5%284%2F3%29%2A1000%2Ameters

Ten persons per meter:
%28%285%2A4%2A1000%29%2F3%29%2Ameters%2A%2810%2F1%29%28persons%2Fmeter%29
20%2A1000%2A10%2F3
%282%2F3%29%2A10000
highlight%2866667%29 persons; maybe more accuracy than meaningful.

Better, about between 66600 and 66700 persons.