The cost price of a saree to a person X was ₹100. Person X sells the saree to person Y at a profit of 10% and person Y then sells it to person Z at a loss of 10%. How much does person Z pay for the saree?

₹99

                   X                           Y                         Z

Let CP         100----10%P--------110------10%L------99

                   ⇓×1                                                   ⇓×1

                   100 Given                                          99