on selling a watch for ₹ 11400 a shopkeeper loses 5% for how much did he purchase it?

on selling a sofa-set for ₹ 21600 a dealer gains 8% for how much did he purchase it ?

On selling a table for Rs. 1974, Ramesh loses 6% . For how much did he puchase it?

By selling a T-shirt for Rs. 648, a shopkeeper loses 4%. For how much should he sell it to gain 4%

By selling a chair for Rs. 1440, a shopkeeper loses 10%. At what price did he buy it?

By selling a sweater for Rs. 750, a shopkeeper gains 25%. For how much should he sell it to gain 30%?

On selling an article for Rs. 360 , a shopkeeper losses 10% . For how much (in Rs. ) he should sell the article in order to earn a profit of 25% ?