The calculation method is as follows:
Suppose you buy a kilo, you get a wishbone of 1.5kg, and the unit price is:
1×12 ÷ (1+0.5) =12 ÷1.5 = 8 (yuan/kg).
Answer: The actual price of chicken wishbone is 8 yuan/kg.
Extended data:
This sales method is a way for merchants to promote sales. In fact, the real price of chicken wishbone is 8 yuan/kg, which can be sold at one time 1.5 kg. If you bid for 8 yuan/kg, you may sell 0.5 kg less each time.
China's application problems usually require narrative to meet three requirements:
1, not contradictory, that is, conditions, conditions and problems cannot be contradictory;
2. Completeness, that is, the condition must be sufficient to ensure that the value of the unknown quantity can be obtained from the condition;
3. independence,
In other words, several known conditions cannot be deduced from each other.
Mathematics application problems in primary schools are usually divided into two categories: simple application problems that can be solved in one step only by addition, subtraction, multiplication and division; Complex application problems that need two or more operations to solve.
An application problem with two or more operations without specific solving rules is called a general application problem. An application problem that has a special quantitative relationship and can be solved by specific steps and methods is called a typical application problem.
(Application problems in primary school are generally solved by arithmetic, and only a few are solved by equations and proportions; All application problems in junior high school should be solved by equation method)
Classification of application problems in primary schools:
Normalization, induction, sum difference, sum times, difference times, times ratio, meeting, catching up, planting trees, age, navigation, train, clock, profit and loss problem, engineering, positive-negative ratio, proportional distribution, percentage, cattle grazing, chickens and rabbits in the same cage, phalanx, commodity profit, deposit interest rate.
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