Mr. Seth inherits 2505 gold coins and divides them among his three sons: Brij, Purab and Mohan in a certain ratio. Out of the total coins received by each of them, Brij sells 30 coins, Purab donates his 30 coins and Mohan looses 25 coins. Now, the ratio of gold coins with them is 46 : 41 : 34 respectively. How many coins did Purab receive from his father?

The total number of coins after the deductions is 2505 minus 30 minus 30 minus 25, which equals 2420. These remaining coins are in the ratio 46:41:34, giving a total of 121 parts; dividing 2420 by 121 shows each part equals 20 coins. Purab's remaining coins equal 41 parts multiplied by 20, which is 820; adding back the 30 coins he donated means he initially received 850 coins.

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