1.c less than b less than 0 less than a.
Simplification: |2b+c|+|2a-c|-2|b+c-a|
2. Let three mutually unequal rational numbers be expressed in the form of 1, a+b, a, 0, b/a, b, and find the value of a 2010+b 2009+b 2009.
A batch of rice is stored in two granaries. The rice yield in Akuso village is eight-fifths that of Ku.
Later, I took 42 tons from warehouse A and 45% from warehouse B. At this time, the rice storage capacity of the two warehouses was equal. How many tons of rice was originally stored in warehouse B?
The amount of rice in Jiakusuo village is 5/8 of that in B village.
The ratio of Party A to Party B is 5: 8.
Later, I took 42 tons from warehouse A and 45% from warehouse B. At this time, the rice storage capacity of the two warehouses was equal.
The remaining B: 8*( 1-45%)=440%=4.4.
A The rest is also 4.4. If you take away 5-4.4=0.6, it is 42 tons.
A originally had 42*5/0.6=350 tons, and B originally had 350*8/5=560 tons.
A project should be completed within a certain time. If six people are reduced, the working hours will be increased by 12 days, and if four people are increased, it will be completed four days in advance. How many days can it be completed according to the regulations and how many people can finish it?
Assuming that it should be completed by Y people in X days according to the regulations, the daily workload of each person is1/xy;
If 6 people are reduced and the working hours are increased by 12 days, the total working hours per person per day will be
1/[(y-6)(x+ 12)]；
If four people are added and the working hours are advanced by four days, the total working hours per person per day will be
1/[(y+4)(x-4)]= 1/xy。
According to the implicit conditions, the equation is as follows:
1/[(y-6)(x+ 12)]= 1/xy
1/[(y+4)(x-4)]= 1/xy
X=20, y= 16 for solving the equation.
There is an answer to this.
The original price of a commodity in 800 yuan is 1.200 yuan. If you want to keep the profit rate not less than 5%, you can get a discount at most.
The solution set of unequal ax>a is X.