Question

A shopkeeper lost 10% by selling an article for
*900. At what price should he have sold the
article to gain 10% ?​

Answer 1

loss = cost price - selling price

loss %=10

90% of cost price = 900

cost price = 1000

he lost 10%= 100

he needs 10% profit

so

new selling price = 1000 + 100

=1100

artice should be sold at 1100 to earn 10% profit