If cost price is $Rs.\, 150$ less than the selling price and profit is $20 \%,$ then what is the selling price (in $Rs.$)?

A bakery bakes cake with the expectation that it will earna profit of $40 \%$ by selling each cake at marked price. But during the delivery to showroom $16 \%$ of the cakes were completely damaged and hence could not be sold. $24 \%$ of the cakes were slightly damaged and hence could be sold at $80 \%$ of the cost price. The remaining $60 \%$ of the cakes were sold at marked price. What is the percentage profit in the whole consignment?

A person incurs $5 \%$ loss by selling a watch for $Rs.\,1140 .$ At what price should the watch be sold to earn $5 \%$ profit in $Rs.$?

A man bought apples at the rate of 6 for $Rs.\,20$ and sold them at $4$ for $Rs.\, 16.$ His estimated profit $\%$ is

A trader buys $500\, kg$ of cotton for $Rs.\, 9,000.10 \%$ of this cotton is spoiled due to rain. At what rate ($Rs./ kg$) should he sell the rest to earn $10 \%$ profit?

A man sold two cows at $Rs. \,1995$ each. On one he lost $10 \%$ and on the other he gained $10 \% .$ What his gain or loss percent?