275 times > 250×200

275 times > 50000

x>50000÷275

X > 18 1.8 1 period

∵x should be a positive integer,

X should be 182.

A: At this time, more than 182 bicycles have been sold.

2. Solution: Make the fuse larger than x cm.

(x÷ 1)×5>400

5x>400

x>80

Answer: the fuse should be more than 80 cm.

3. Solution: Assume that the annual profit of the whole factory in the previous year is at least X yuan.

(X+ 1000000)÷240-X÷280≥6000

X of 240+65438, X of 3+02500-280 ≥ 6000

2 1X+2 100000- 18X≥30240000

2 1X- 18X≥30240000-2 100000

3X≥9240000

X≥3080000

A: The annual profit of the whole factory in the previous year was at least 3.08 million yuan.

The above is plagiarism

Here is my answer:

4. Solution: Suppose the merchant sets the selling price at least X yuan.

Then: (1-5%)X≥ 1.5

0.95X≥ 1.5

X ≥ 30/19 (30 out of19, no score)

A: If the merchants set the price at least 30/ 19 yuan, they can avoid losses.

5. Solution: Suppose there are at least X computers in this batch.

Then: 5500*60+(X-60)*5000≥550000.

330000+5000X-300000≥550000

5000X≥520000

X≥ 104

A: There are at least 104 computers in this batch.