Answer: D) 50 cub.m/min Explanation: Let filling capacity of the pump be 'F' m3/min Then, the filling capacity of the pump will be (F + 10) m3/min From the given data, 2400F - 2400F+10= 8⇒ 2400 F+10-FF(F+10) =8⇒ F2 + 10F - 3000 = 0⇒ F = 50 m3/min

Answer: A) Net Domestic Product Explanation: Gross Domestic Product :  It is the total value of all final goods and services produced within the boundary of country during the given period of time.  Gross National Product : It is the total value of the total output or production of final goods and services produced by the nationals of a country during a given period of time.  Gross National Income :  It is the total domestic and foreign output claimed by residents of a country, consisting of gross domestic product (GDP) plus factor incomes earned by foreign residents, minus income earned in the domestic economy by non-residents. Net National Product : The total value of goods produced and services provided in a country during one year, after depreciation of capital goods has been allowed for.

Answer: D) 5 Explanation: Arithmatic mean = sum/members  => (1x1 + 2x2 + 3x3 + 4x4 + 5x5 + 6x6 + 7x7) / (1 + 2 + 3 + 4 + 5 + 6 + 7) => 140/28 = 5