If Ram wants to gain Rs. 150 by selling 10 currants, let's calculate the selling price per currant:
Cost Price (CP) for 10 currants = Rs. 1000
Profit (P) = Rs. 150
Selling Price (SP) = CP + Profit
SP = 1000 + 150
SP = Rs. 1150
Now, since he is selling 10 currants, the selling price per currant would be:
Selling Price per currant = Total Selling Price / Number of Currants
Selling Price per currant = 1150 / 10
Selling Price per currant = Rs. 115
Therefore, Ram should sell each currant for Rs. 115 in order to gain Rs. 150 after selling all 10 currants.