Two farmers, Anil and Baban, went into a fruit market to sell their mangos. Initially they had equal number of mangos. As Anil’s mangos were larger, he decided to sell them at a price of 10 rupees for 3 mangos. Baban fixed his price at 10 rupees for 4 mangos. Unfortunately, immediately after reaching market, Anil had to go somewhere, and he handed over his mangos to Baban. Baban mixed all the mangos, and sold them at a price of 20 rupees for 7 mangos. After all the mangos were sold, the money was equally divided between Anil and Baban. Surprisingly, Anil found that he got 400 rupees less than what he should have got, had he not left the market. How many mangos each of them had initially?