The ratio of income to expenditure of Mr.Natarajan is 7:5.If he saves Rs.2000/- a month what could be his income?

Form the pair of linear equations in the following problems and find their solutions (if they exist) by any algebraic method :- The ratio of incomes of two persons is 9 : 7 and ratio of their expenditures is 4 : 3. If each of them saves ? 200 per month. Find their monthly incomes.

the ratio of the length to breadth of a lawn is 3:5.It costs Rs.3200/- to fence it at rate of Rs.2/- a metre.What would be the cost of developing the lawn at the rate of Rs.10/- per square metre.

The income of a person is ₹ 3,00,000 in the first year and receives an increase of % 10,000 to his income per year for the next 19 years. Find the total amount, he receives in 20 years.

The income I of a doctor is given by: I = x^3 - 3x^2 + 5x Can an insurance agent ensure the growth of his income?

A man starts repaying a loan as first instalment of Rs. 100. If he increases the instalment by Rs 5 every month, what amount he will pay in the 30th instalment?

In each of the following problems, clearly state what the relevant and irrelevant factors are while going through Steps 1, 2 and 3 given in this chapter :- Suppose a company needs a computer for some period of time. The company can either hire a computer for Rs 2,000 per month or buy one for Rs 25,000. If the company has to use the computer for a long period, the company will pay such a high rent, that buying a computer will be cheaper. On the other hand, if the company has to use the computer for say, just one month, then hiring a computer will be cheaper. Find the number of months beyond which it will be cheaper to buy a computer.

If the monthly savings of the family is Rs.3,000.What is the monthly expenditure on clothes ?