Question

A amn sold two watches for rs.3750 each; on one he gained 5% and on the other he lost 5%. what was his total loss or gain as a percentage?

Answer 1

as the selling price of the two watches is
3750+3750
= 7500
Aamn sold both watches in rs 7500

but
on the first watch he gained 5%
means 3750 + 5%
= 3937.5

on the second watch he lost 5%
means 3750 - 5%
= 3562.5

in total of both the watches is
3937.5 + 3562.5
= 7500


as the total of both watches is equal to selling price of the watches
therefore he did not loss or gain anything