The computer company sells a batch of computers (the computer company sells a batch of computers in the first month at 5500 yuan each)

Typical application problems of inequality are provided as follows.

1. An engineering team wants to recruit workers A and B. 150. In addition, the wages of two kinds of workers are 600 and 1000 respectively. At present, the number of 100 million kinds of workers is required to be not less than twice that of workers in A. When asked how many workers in A and B are recruited, what is the minimum wage?

We recruit X Class A workers first, and then Class B workers with a monthly salary of Y yuan.

Yes: 150-x ≥ 2x.

The solution is x≤50.

y=600x+ 1000

= 150000-400x

Obviously, the bigger x is, the smaller y is, so when X = 50, y is the smallest.

That is, when each company recruits 50 workers and the second company recruits 150-50 = 100 workers, the minimum wage will be paid.

Lao Zhang and Lao Li bought the same number of breeding rabbits. A year later, Lao Zhang raised more rabbits than he bought.

There are two more rabbits, and Lao Li has fewer rabbits 1 rabbit than Lao Zhang bought.

Lao Li keeps no more than two thirds of rabbits. How many kinds of rabbits did Lao Zhang buy at least a year ago?

Suppose Lao Zhang bought X rabbits a year ago.

x+2≤*2/3

3x+6≤4x-2

-x≤-8

x≥8

Lao Zhang bought at least eight breeding rabbits a year ago.

The computer company sold a batch of computers, and sold 60 computers at the price of 5500 yuan/set in January.

The price was reduced from the second month, and then all these computers were sold at the price of 5000 yuan/set.

The total sales exceeded 550,000 yuan. How many computers are there in this batch?

Suppose there are x computers in this batch.

5500*60+5000*550000

x 104

X is an integer, so at least 105 computers can make the total sales exceed 550,000 yuan.

A popular science book has 98 pages. Xiao Wang hasn't finished it for a week, but Xiao Yong finished it in less than a week. On average, Xiao Yong reads three more pages than Xiao Wang. How many pages does little Wang Pingjun read every day?

If Wang Pingjun reads A pages every day, Xiao Yong reads +3 pages on average every day.

7a98

The solution is 1 1.

This computer company sells a batch of computers. In the first month, 60 computers were sold at the price of 5500 yuan/set, and the price was reduced in the second month, and then it was 5000 yuan/

5500x60 = 330，000

The sales amount after the second month is at least 55-33 = 220,000 yuan.

220000/5000=44

So at least 44+60= 104 sets.

This computer company sells a batch of computers. In the first month, 60 computers were sold at the price of 5500 yuan/set, and the price was reduced to 5000 yuan/set in the second month.

Suppose this batch of computers consists of x computers,

Then 60× 5500+× 5000 > 550000.

That is 330+5 > 550.

That is 5x+30 > 550.

That is 5x > 520.

Solution x > 104.

And x is a positive integer.

So the minimum value of x is 105.

So there are at least 105 computers in this batch.