Please solve 21 (Ans. Weighted Mean = 131.
21. A student obtained 60 marks in English, 75 in Hindi, 63 in Mathematics, 59 in Economics and 55
Statistics. Calculate weighted mean of the marks ifweights are respectively 2, 1 , 5, 5 and 3,
(Ans. Weighted Mean = 60.625 ma
UZ2. A housewife uses 10 kg of Wheat, 20 kg of Fuel, 5 kg of Sugar, and 2 kg of oil. Prices (per kg)
