2. In the zoo, two baboons are playing on the seesaw. The big baboon weighing 33 kilograms threw the little baboon into the sky, which made the little baboon scream. At this time, the little monkey, whose weight is only half that of the little monkey, jumped on the little monkey from the tree, only to see the big monkey leave the ground and be thrown up. Do you know how much this little monkey weighs?
3. A group plans to make a batch of "Chinese knots". If everyone does five, it will be nine more than planned. If everyone does four, it will be less than planned 15. How many team members are there? How many Chinese knots do they plan to make?
4. A middle school organizes a spring outing for junior one students. It was originally planned to rent a number of 45-seat buses, but 15 people had no seats. If you rent the same number of 60-seat buses and have one more, the rest will be just full. We want to ask
(1) What is the number of students in Grade One? How many 45-seat buses were originally planned to be rented?
5. Input a batch of accounting statements into the computer. It takes 20 hours for Party A to do it alone, and it takes 12h for Party B to do it alone. Now Party A works alone for 4 hours, and the rest is done by both parties. How long will both parties cooperate?
The cooperation time of A and B is 6H.
The sum of 6 A, B and C is 53, so the ratio of A to B is 4: 3, C is 2 less than B, B is () and C is ().
The length of thick candle is the same as that of thin candle. The thick candle burns for 5 hours and the thin candle burns for 4 hours. After the power failure, two candles are lit at the same time, and they are extinguished at the same time after the call. It turns out that the length of a thick candle is four times that of a thin candle. How long is the power outage?
8. For a three-digit number, the number of the hundredth digit is greater than the number of the tenth digit 1, and the number of the tenth digit is three times smaller than 2. If the order of the three digits is reversed, the sum of the three digits and the original three digits is 1 17 1. Find these three numbers.
Class 3, Grade 1, Senior High School donated books to Hope Primary School. A class library 152 volumes. The number of books donated by class two is the average of three classes, and the number of books donated by class three is 40% of the total number of books donated by grade three. How many books did Class Three donate?
10. It is known that it takes 12 days for both parties to complete a job at the same time. If Party A and Party B complete this work alone, the number of days required by Party B is 65438+ 0.5 times that required by Party A. How many days will it take for Party A and Party B to complete the work alone?
1 1. If Team A contracts a project within the specified date, Team B will need more than 3 days to complete it. As a result, Team A and Team B cooperated for two days, and the rest was done by Team B alone, just on the specified date. How many days is the specified date?
12 each worker in a workshop can produce 12 bolts or 18 nuts, and each bolt should be equipped with two nuts. There are currently 28 workers. How to allocate the number of workers so that the daily output just matches?
13 A and B trains run in opposite directions. The speed of the train is 60 kilometers per hour, and the length is 150 meters. Train B has a speed of 75 kilometers per hour and a length of 120 meters. How long does it take for two cars to meet from front to back?
Therefore, the sales volume increased by11.11%compared with the original price.
15 The sum of the original unit prices of the two commodities A and B is 100 yuan. Due to market changes, a commodity has decreased by 10%. B After the price adjustment of the commodity is 5%, the sum of the unit prices of the two commodities has increased by 2%. What are the original unit prices of A and B respectively?
16. The number of people in Workshop A is 30 less than 4/5 of Workshop B. If 10 is transferred from Workshop B to Workshop A, then the number of people in Workshop A is 3/4 of Workshop B. Find the original number of people in each workshop.
17 A rides a bike from place A to place B, and B rides a bike from place B to place A, both of which advance at the same speed. You should know that they set off at 8 o'clock in the morning at the same time. By morning 10, they are still 36 kilometers apart. At noon 12, they are 36 kilometers apart. How to find the distance between a and b? (Equation)
18. both a car and b car are 180 meters long. If two trains travel relatively, it takes *** 12 seconds from the front to the rear; If driving in the same direction, it takes 60 seconds from the front of car A to the rear of car B, and the speed remains unchanged. Find the speed of a car and b car.
The sum of the speeds of the two vehicles is [180 * 2]/12 = 30m/s.
19. Two candles of the same length, the thick one can burn for 3 hours and the thin one can burn for 8/3 hours. Light two candles at the same time when there is a power failure, and blow them out when a phone comes in. The thick one is twice as long as the thin one. Find the time of power failure.
A factory produced 2300 machines this year, which was 25% higher in the first half and 15% lower in the second half. How many machines were produced in the second half of this year?