Mrs. Hinduja's age is 50 years. Last year her taxable income was rs 16,30,000. How mauch income tax she has to pay ?

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

Sumi wants to invest atmost Rs. 20,000 in VIII sereis National Savings Bonds and Kisan vikash Oathras. According to rules, she has to invest atleast Rs. 5000 in saving bonds and atmost Rs. 8000 in Kisan Pathra. If the rate of inerest on savings bond is 10% p.a and the rate of Kisan vikash Pathara is 15% p.a, how much money should she invest in each to ear maximum yearly income ? also find the maximum yearly income.

A trust fund has Rs. 30,000 that must be invested in two different types of bonds. The first bond pays 5% interest per year, and the second bond pays 7% interest per year. Using matrix multiplication, determine how to divide Rs. 30,000 among the two types of bonds. If the trust fund must obtain an annual total interest of: (a) Rs. 1800 (b) Rs. 2000

Jinal saves Rs.1600 during the first year, Rs. 2100 in the second year, Rs. 2600 in the third year, If she continues her saving in this pattern, in how many years will she save Rs. 38,500?

A salesperson whose annual earnings can be represented by the function A (x) = 30,000+0.04x, where x is the rupee value of the merchandise he sells. His son is also in sales and his earnings are represented by the function S(x) = 25,000 +0.05 x. Find (A+S) (x) and determine the total family income if they each sell Rs 1,50,00,000 worth of merchandise.

Mrs. Parekh invested an equal amount in two companies by purchasing equity shares with market price Rs 145 and Rs 160 each . At the end of the year, both the companies declared the dividend of 20% and 30% each .In which company was her investment profitable ?

Answer the following questions . a. The earth's magnetic field varies from point is space. Does it also change with time ? It so , on what time scate does it change appreciably ? b. The earth's core is known to contain iron. Yet geologists do not regard this as a source of the earth's magnetism why ? c. The charged currents in the outer conducting regions of the earth's core are thought to be responsible for earth's magnetism . What might be the ' battery ' (i.e., the source of energy) to sustain these currents ? d. The earth may have even reversed the direction of its field several times during its history of 4 to 5 billion years. How can geologists know about the earth's field in such distant past ? e. The earth's field departs from its dipole substantially at large distances (greater than about 30,000 km) what agencies may be responsible for this distortion ? f. Interstellar space has an extremely weak magnetic field of the order of 10^(-12) T, Can such a weak field be of any significant consequence ? Explain. [Note : Exercise 2 is meant mainly to arouse your curiosity . Answers to some question above are tentative or unknown . Brief answers wherever possible are given at the end . For details , you should consult a good text on geomagnetism.]

Mr. Golhale invested Rs 22,500 in shares of face value Rs 100 at market value Rs 125 . If the company declared 60% dividend at the end of the year, whar was the income from dividend?