2. Divide a 5-meter-long iron wire into 8 segments, each with a length of () and each with a length of ().

3. the unit of the score is yes. The sum of the maximum true score and the minimum false score is ().

4. Stored grain in warehouse A equals stored grain in warehouse B, and warehouse A: warehouse B = (): (). It is known that two warehouses have 360 tons of grain, warehouse A has () tons of grain and warehouse B has () tons of grain.

5. If 7x=8y, then x: y = (): ().

6. If the radius of the big circle is 8 cm and the diameter of the small circle is 6 cm, then the perimeter ratio of the big circle to the small circle is (), and the area ratio of the small circle to the big circle is ().

7, put 5 grams of salt into 50 grams of water, the ratio of salt to brine is ().

8. Party A and Party B each have a few yuan. If Party A gives Party B 20% of all his money, all their money is exactly equal. It turns out that the simplest integer ratio of all the money of Party A and Party B is ().