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A family consumes 12kg of L.P.G in 30 days. Calculate the average energy consumed per day, if the calorific value of L.P.G is 50kJ/kg.
A family consumes 12kg LPG in 30 days.
then, the family consumes LPG in a day = 12/30 kg = 0.4 kg .
The calorific value of LPG = 50J/kg
(Calorific value is the measurement of heat produced by a specific amount of fuel or food. It is usually expressed in joule per kg.)
The average energy consumed per day = calorific value of LPG × amount of LPG consumed in a day
= 50 × 0.4 J = 20J
Hence, 20J of energy is consumed per day.
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