A shopkeeper earns $15\%$ profit on a shirt even after allowing $31\%$ discount on the marked price. If the marked price is $₹ 1250$, then the cost price of the shirt is

Applied to a bill of $₹ 15000$, what is the difference in rupees between a discount of $50\%$ and two successive discount of $30\%$ and $20\% ?$ 

(Write the answer without rupee symbol)

A steel almirah is quoted at $₹ 1100$. Sales tax at the rate of $7\%$ is charged extra. Find the amount of buyer has to pay for the almirah. 

If the required answer is $₹ k,$ then find the value of $k$.

Radha went to a departmental store and purchased the following articles.

(i) Bakery shop ( S.T. $@ 10\%$) worth $₹ 42$. 

(ii) Clothes ( S.T. $7\%$) worth $₹ 800$.

(ii) A pair of shoes (S.T.$7\%$) worth $₹ 200$.

(iv) cosmetics (S.T. $10\%$) worth $₹ 150$.

Find the amount she has to pay for the bill.