the heat generated by the full combustion of 1 kg of liquefied petroleum gas is 11, kcal, and the heat generated by primary electricity is 86 kcal. If the price of 1 kg of liquefied petroleum gas is in 8 yuan and the price of electricity is in .8 yuan, it will cost 1.2 yuan to generate 11, kcal of heat and electricity. In this way, it is easy to calculate that gas is cheap. After answering, I hope it will help you solve the problem.