Pooja sells an article to Shweta at 10% profit and then Shweta sells the same article to Barkha for 20% profit. If Barkha buys the article at Rs. 660, then find the price at which Pooja buys the same article. (in Rs.)
1
Rs. 500
2
Rs. 600
3
Rs. 800
4
None of the above