1、 35 = ( )∶( )= 18( ) =6÷( )

2. If the ratio of two acute angles of a right triangle is 1: 2, the two acute angles are () and () degrees respectively.

3. When the number of girls accounts for 56 of the number of boys, the ratio of girls to boys is (), and boys account for () of the total number.

The last item of the ratio is 8, and the ratio is 34. The first term of this ratio is ().

5. On a certain section, car A walks for 6 hours and car B walks for 4 hours. The speed ratio of the two cars is ().

6. Put 20g of sugar into100g of water, and the ratio of sugar to sugar water is ().

7, a box of apples, ate 25, the ratio of the number eaten to the remaining number is (), and the ratio is ().

8. The speed of a motorcycle is 35 slower than that of a car. The speed ratio between this motorcycle and this car is ().

9. The height ratio of Li Minghe Wang Hua is 6: 5, and Li Ming is taller than Wang Hua () (); Wang Hua is shorter than Li Ming.

10, the degree ratio of three internal angles of a triangle is 1: 1: 2, if divided by the angle, it is a triangle.

1 1, and the overlapping area on the right is the area of Figure A and Figure B..

The area ratio of Figure A and Figure B is (): ().

12, and the ratio of the side lengths of the big square and the small square is 3: 2, then the ratio of the areas of the big square and the small square is ().

Second, solve the problem.

1. The distance between Party A and Party B is 360 kilometers. Buses and trucks start from two places at the same time, face to face, and their speed ratio is 5: 4. How many kilometers did the two cars travel when they met?

The average of A and B is 56, and the ratio of A and B is 4: 3. What are the numbers of A and B respectively?

3. Two engineering teams, Party A and Party B, built a road of 360m, and the length ratio of the two teams was 5: 4. How many meters did Team A build more than Team B?

There are two piles of goods. Pile A is more than pile B 18 tons. The weight ratio of pile A to pile B is 9: 5. How many tons are there in each of the two piles?

5. Prepare disinfectant. The ratio of liquid medicine to water is 1: 50. How many kilograms of liquid medicine and water does it take to prepare 300 kilograms of this disinfectant?

6. Prepare disinfectant. The ratio of liquid medicine to water is 1: 50. The existing potion is 300 kilograms. How many kilograms of water do you need?

7. Prepare disinfectant. The ratio of liquid medicine to water is 1: 50. The existing water is 300 kilograms. How many kilograms of potions do I need to add?

8. There are 5400 tons of coal stored in coal yards A and B. When 1000 tons is transported out of Party A's coal yard and 400 tons is transported into Party B's coal yard, the tonnage ratio of coal stored in coal yards A and B is 7: 5. How many tons of coal are stored in each of the two coal yards?

9. Xiao Fang read a story book. On the first day, she read the whole book, and the next day, she read 10. At this time, the ratio of read pages to unread pages is 2: 3. Which page should she start from on the third day?

10, each tie 20 yuan, each corsage 10 yuan. The ratio of the number of ties and corsage pieces in a jewelry store is 3∶2, and the value of * * * is 4,000 yuan. What's the number of ties and corsage?