Question

A sold a comodity to B with 10% profit. If B resold the same comodity to A with a loss of 10%, then A will have -

Answer 1

11 % profit

Answer 2

Original price = x
A sold to B for 1.1x
B sold to A for (1.1x)(0.9) = 0.99x
A got 1.1x by selling it, and spent 0.99x to buy it
1.1x - 0.99x = 0.11x