a man sells three article's x,y,z for rs 1386 each.he sells article X at 12.5% loss , article y t 10% profit if there is no profit and no loss in whole transaction.find cp of article Z?

Hi Nunavath Ramesh,
It is given,
SP_x = 1386
SP_y = 1386
SP_z = 1386
It is also given that article X is sold at 12.5% loss
7/8(CP_x) = 1386
CP_x = 1584
It is given, article y is sold at 10% profit
110/100(CP_y) = 1386
CP_y = 1260
There is no profit or no loss in whole transaction. This implies cost price of all articles is same as selling price.
1386*3 = 1584 + 1260 + CP_z
CP_z = 1314
Hope this helps!