A housewife uses 10 kg of Wheat, 20 kg o...

A housewife uses 10 kg of Wheat, 20 kg of Fuel, 5 kg of Sugar, and 2 kg of oil. Prices (per kg) of these items are Rs. 1.50, 50 paise, Rs. 2.80 and Rs. 10 respectively. Taking quantities used as weights find out the weighted arithmetic average of the prices.

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