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.