Lwani sold two sarees for Rs.1980 each. On one, she lost 10%, while on the other she gained 10%. Find her gain or loss per cent in the whole transaction.
When two similar items are sold at same price, one at a gain and other at a loss of same percent. Then always a loss will be occurred.
Loss % = (Common Loss and Gain Percent / 10)2
= (10/10)2
= (1)2
= 1
So, Loss will be 1%.