Subscription fee for a month = $ 5
Subscription fee for a writer who signs up = $ 5
Number of subscribers last month = 200
New members who joined the website = 40
Number of subscribers who left the website = 10
Hence, total subscribers in the present time = [tex]200+40-10=230[/tex]
Now, total subscription fee received this month = [tex]5\times230=1150[/tex]
Hence, the answer is $1150.