A, C, B went fishing, a fished 11, B fished 7, C fished 7. Later, a tourist came, and four people roasted all the fish. Finally, the tourist paid 6 yuan. How can the money be divided reasonably?

A, C, B went fishing, a fished 11, B fished 7, C fished 7. Later, a tourist came, and four people roasted all the fish. Finally, the tourist paid 6 yuan. How can the money be divided reasonably?

A total of 25 fish, an average of 25 / 4 fish per person, eat their own fish should not be charged, so a's contribution to tourists is 11-25 / 4 = 19 / 4, B and C's contribution is 7-25 / 4 = 3 / 4, so a's contribution to tourists is (19 / 4) / (19 / 4 + 3 / 4 + 3 / 4) = 76 / 100, similarly, B and C's contribution to tourists is 12 / 100, 12

1. A batch of fruit is delivered to the fruit shop. One third of the fruit is sold on the first day and 360 kg on the second day, leaving 4 / 9 of the total. How many kg are there in this batch of fruit?
2. The typist typed a manuscript. On the first day, he typed 2 / 9. On the second day, there were as many as on the first day. There were 135 pages left. How many pages in total?

360/（1-1/3-4/9）
=360/（2/9）
=1620kg
135/（1-2/9-2/9）
=135/（5/9）
=243 pages

Five practical problems in primary school
What is the height of a cuboid oil bucket with a length of 0.8 m and a width of 0.5 m after it is filled with oil? 2. A cuboid fish tank has a square with a circumference of 56 cm on the bottom. Now it is like pouring nine liters of water into the tank. What is the height of water? 3. A cuboid steel bucket with a length of 6 DM is forged into a cuboid steel embryo with a length of 16 cm and a width of 0.4 M, What's the height? 4. Cast a 3.6m long iron wire into the largest cube frame. How many square decimeters does it take to paste paper on the outside of the frame? What's the volume? 5. A cuboid house is 20 cm long, 15 cm wide and 18 decimeters high. After putting a stone in it, the water surface rises by 4cm and the volume of the stone is calculated?

1、 4×4×4÷8÷5=1.6dm 2、 56÷4=14 9000÷（14×14）=45.918cm 3、 6×6×6÷1.6÷4=33.75dm
4. 36 △ 12 = 3 3 × 3 × 6 = 54 square decimeter, 3 × 3 × 3 = 27 cubic decimeter, 5 = 20 × 15 × 4 = 1200 cubic centimeter