The monthly income of two persons are in the ratio 2: 3 and their monthly expenses are in the ratio 5: 9. If each of themn saves ₹ 600 per month, then their monthly incomes are

The annual income of A and B Aare in the ratio 4: 3 and the ratio a of their expenditures is 3 : 2. If each of them saves ₹ 600 in the year, the annual income of A is 

A discount of 16% on the marked price of a book enables a man to buy a pen that costs? 80. How much did he pay for the book?

How much percent above the cost price should a shopkeeper mark his goods so as to earn a profit of 10% after allowing a discount of 12% on the marked price? 

A tradesman marks his goods at such a price that after allowing a discount of 15%, he makes a profit of 20%. What is the marked price of an article whose cost price is ₹ 170? 

A trader allows a trade discount of 20% and a cash discount of $$6{1\over4}\%$$ on the marked price of the goods and gets a net gain of 20% of the cost. By how much above the cost should the goods be marked for the sale? 

The price that Akbar should marks on a pair of shoes which costs him 1,200 to gain 12% after allowing a discount of 16% (in rupees) is-

If the sum of {a\over b}and its reciprocal is 1 and a ≠ 0, b ≠ 0, then the value of a³ + b³ is