There is a batch of chemical fertilizer in the warehouse. After 40% of the chemical fertilizer is transported away, another 45 tons are transported in. At this time, the chemical fertilizer in the warehouse is 3 tons more than 3 / 4 of the original. How many tons of the original chemical fertilizer in the warehouse? No equations

After 40% is taken away, there is still a lot left
1－40％＝60％
45-3 = 42 (tons)
It's original
3-60% = 15%
Original chemical fertilizer in warehouse
42 △ 15% = 280 (tons)

After 20% of the chemical fertilizer in the warehouse is transported, another 45 tons are transported. At this time, the chemical fertilizer in the warehouse is 85% of the original chemical fertilizer. How many tons of the original chemical fertilizer in the warehouse?

45 ÷ [85% - (1-20%)] = 900 tons

There are 10 tons of chemical fertilizer in the warehouse, 5 / 1 of the total in the first time and 2.5 tons in the second time. How many tons of chemical fertilizer are there in the warehouse?
It's urgent. Come on

10-10 * 1 / 5 = 8 tons
8-2.5 = 5.5 tons

Fill the six numbers 20, 30, 40, 60, 80160 in the circle below to make the product of the three numbers on each side of the triangle equal

The answer is not unique, pictures for your reference
Hope to help you (^ o ^)/~

Put the eight numbers 10.20.30.40.50.60.70.80 in the circle, so that the sum of the five numbers on each big circle is 200. Two big circles have two small circles that overlap

Without a picture, we can only say:
Fill in a big circle: 10, 20, 30, 60, 80
Fill in another big circle: 10, 30, 40, 50, 70
The two numbers that overlap are 10 and 30

Choose seven numbers from the eight numbers of 10, 20, 30, 40, 50, 60, 70 and 80 and fill them in the small circle respectively. They are three numbers on each straight line and each circle
○
○
○
○ ○
○ ○
It's like this
The top circle should be in line with the other two
The sum of every three is 120

.50
thirty
forty
70 20
10 60

Put the seven numbers 10.20.30.40.50.60.70 in the small circle, so that the sum of the three numbers on each line and each circle is 120

If so, the middle circle is filled with 40, which is on the same line, and the other two groups of data, 10, 70; 20, 60; 30 and 50, are filled in any position. Note that they are on the same line,

Put the nine numbers 40, 50, 60, 70, 80, 90, 100, 110 and 120 in the square to make the sum of the three corners of the horizontal, vertical and diagonal equal?

50 120 70
100 80 60
90 40 110

144 / 6 192 / 8 288 / 12 what do you find in the table

It turned out to be 24

288 and 192, 240 and 160, 192 and 128, 144 and 96, 96 and 64 are all greatest common factors
hurry up

1,96
2,80
3,64
4,48
5,32