2. There are 40 tortoises and cranes with legs 1 12. How many turtles and cranes are there?
3. There are 38 people in the class and 8 boats are rented. Every boat is full, with 6 people in the big boat and 4 people in the small boat. How many ships are there?
There are * * * ten bicycles and * * twenty-six wheels. How many bicycles and tricycles are there?
The unit price of table is more expensive than that of chair. 60 yuan, I bought 6 chairs and 10 tables, and * * * paid 1224 yuan. What is the unit price of tables and chairs?
6. In a parking lot, 48 cars and motorcycles were parked, including 4 wheels for each car and 3 wheels for each motorcycle. These cars have 65,438+072 wheels. How many cars and motorcycles are there in the parking lot?
7. Xiao just bought eight stamps and four stamps *** 100, and * * * paid them to 6.8 yuan. By the way, how many stamps did Xiaogang buy back? How much do you pay each other?
8. Chickens and rabbits live in the same cage. Chicken 15, chicken and rabbit 132. How many chickens and rabbits are there?
9. Chickens and rabbits live in the same cage. Chicken 10, chicken feet 10. How many chickens and rabbits are there?
10. Knowledge contest, 10 true or false questions, scoring rules: 2 points for each correct question, and 1 point for each wrong question. Although Xiaoming answered all the questions, he only got 14 in the final exam. How many questions did he answer wrong?
1 1. There are a group of ostriches and giraffes in the zoo. They have 30 eyes and 44 legs. How many ostriches and giraffes are there?
12. There are 20 questions in the English contest. Answer a question correctly and get 7 points; If you do a wrong question, deduct 4 points; If you don't answer, 0 points. Xiao Gang got 100. How many questions did he leave unanswered? How many questions were answered wrong?