Two fifths of Lao Wang's weight is equal to two thirds of Xiao Li's weight. 3/7 of Lao Wang's weight is lighter than 3/4 of Xiao Li's weight 1.5 kg, so Lao Wang's weight _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ kg.
3. In one exam, 17 students got 100 in math, 100 in Chinese, 100 in both subjects and 100 in at least one of the two subjects. There are _ _ _ _ _ _ _ _ people in Class 45 who failed in both subjects 100.
4. A fruit shop bought six baskets of fruits with bananas and oranges weighing 8, 9, 16, 20, 22 and 27 kg respectively, and only sold one basket of oranges that day. In the remaining five baskets, bananas weigh twice as much as oranges. I asked if the basket bought by the fruit shop that day was a banana.
5. As shown in the figure, there are six points A 1, A2, A3, A4, A5 and A6 around the boundary of the semicircle, where A 1, A2 and A3 are on the diameter of the semicircle, and these six points can form _ _ _ _ _ _ _.
6. There are 100 students going to the park 33 kilometers away from the school. The walking speed of the students is 5 kilometers per hour. There is only one car that can take 25 people in the school, and the speed is 55 kilometers per hour. In order to get to the park in the shortest time, we decided to combine walking and cycling, so the shortest time is _ _ _ _ _ _ _.
7. There are 48 books distributed to two groups of children. It is known that the second group has five more people than the first group. If all the books are distributed to the first group, each person has four books and the rest; There are five books for each person, and there are not enough books. If all of them are given to the second group, there will be three books for each person, and there will be a surplus. There are four books for each person, but there are not enough books. There are _ _ _ _ _ _ people in the second group.
8. As shown in the figure, it is known that squares and triangles partially overlap, and the area of triangle B is 7 square centimeters larger than that of triangle A, so x = _ _ _ _ _ _ _ _ centimeters.
9. One morning at school, there are four classes: math, Chinese, foreign languages and physical education. Mathematics can only be ranked in Class One or Two, Chinese can only be ranked in Class Two or Three, and foreign languages must be ranked ahead of physical education. There are _ _ _ _ _ kinds of timetables that meet the above requirements.
10. Two students, A and B, started from school and walked in the same direction in a stadium. The first group walked at a speed of 4 kilometers per hour half the time, and the other half walked at a speed of 5 kilometers per hour. B first walked half at a speed of 4 kilometers per hour, and the other half walked half at a speed of 5 kilometers per hour, so the first one to arrive at the stadium was _ _ _ _ _ _ _.
1 1. There are four classes in Grade Five, and each class has two monitor. Every time there is a monitor meeting, each class participates in a monitor. The first meeting is A, B, C and D; E, B, F and D attended the second meeting; Attending the third meeting were A, E, B and G; H did not attend three meetings. Who are the two monitor of each class?
12. 1984 A person's age is exactly equal to the sum of the figures of his birth year, so this person is1984 _ _ _ _ _ _ _ _.
Reference answer:
1、 12.46 2、70; 42 3、22 4、3 5、 19 6、2.6
7， 15 8，9 9，3 10，A 1 1，A-F，B-H，C-E，D-G 12，20。