2. A fruit shop delivered *** 15 baskets of oranges, apples and bananas worth 860 yuan. It is known that there are a box of oranges in 40 yuan, a box of apples in 50 yuan, a box of bananas in 70 yuan, and how many boxes of three kinds of fruits are there?
3. A math contest prepared 22 pencils as prizes for students who won the first, second and third prizes. The original plan was to have 6 pencils for the first prize, 3 pencils for the second prize and 2 pencils for the third prize. Later, it was changed to 9 first prizes, 4 second prizes and/kloc-0 third prizes. How many students are there in the first prize, the second prize and the third prize?
4. When Xiao Ming plays the ring game, the chicken in the set gets 9 points, the monkey in the set gets 5 points, the puppy in the set gets 2 points, and Xiao Ming * * * sets 10 times. Every time, each small toy is trapped at least once, and Xiao Ming sets 10 times * * gets 6 1 point. How many times can the chicken be trapped at most?
There are some big monks and some little monks in the temple. It is known that every 7 big monks eat 4 1 steamed bread every day, and every 29 young monks eat 1 1 steamed bread every day. On average, each monk eats exactly 1 steamed stuffed bun every day. Q: How many monks are there in the temple?
6. Puppy and Persian cat are good friends. They always say hello when they meet in the morning and evening. When we meet in the morning, the puppy barks twice and the Persian cat barks. When we meet in the evening, the dog barks twice and the Persian cat barks three times. Careful Xiao Juan counted their calls for 65,438+05 days. They don't meet every morning and evening. In this 15 day, they called 6 1 time. Q: How many times did the Persian cat bark at least?
7. "Zhang Qiujian suan Jing" hundred chickens title: Today, there are hundreds of money, the chicken Weng straight money five, the chicken mother straight money three, the chicken chick three straight one, the hundred money to buy a hundred chickens, ask the chicken Weng, the mother, the chick geometry?
8. In Zhang suan, which was written 500 years ago, a famous mathematical problem was put forward: "One hundred chickens were bought for one hundred dollars": "Today, a rooster is worth five dollars, a hen is worth three dollars, and a chick is worth three dollars. Where did you spend 100 yuan to buy 100 chickens, a rooster, a hen, and the size of a chick? "
9. Solve indefinite equations by integer separation method.
5x-3y=-7
How many positive integer solutions does this equation have?
10. A classmate multiplies the month of his birth by 3 1, then multiplies the date of his birth by 12, and then adds up to tell you the total. Can you calculate his birthday accurately?
If Xiao Li told you 170, when was Xiao Li's birthday?
1 1. Party A said, "Party B and Party C * * have 100 yuan", and Party B said, "If Party A's money is six times the existing one, my money is 1/3, and Party C's money remains unchanged, the three of us still have/kloc-0.
12. Xiao Zhao spends 19 yuan on film, but the money in Xiao Zhao is two yuan, and the money in the store is five yuan. Ask Xiao Zhao how to pay and the store how to exchange money.