Calculating overall profits when scaling


A mediocre profits calculation. please guide me with respect to the image attached

200*10 obviously , think of it like this

400 people boarding a buss , 200 got down at stop 405 , remaining 200 got down at 410 , so since the 2nd group of 200 is travelling from initial stage (400 to 410) , u gotta do 200*10

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Thanks don’t know y I made it all complicated.

:joy::joy::joy::joy:

You have made a wrong diagram (small arrow). Small arrow should be from 400 to 405. So calculation would be like…
{(405-400)*200+(410-400)*200}=3000