2. Mother rabbit picks mushrooms. She can pick 16 mushrooms every day in sunny days, and only 1 1 mushrooms every day in rainy days. She picks 195 mushrooms every day, averaging 13 mushrooms every day. How many days has it rained these days? How many sunny days?
3. There are 52 people doing manual work in Class One, Grade Five, three boys and two girls. As we all know, boys do 36 more than girls. How many boys and girls are there in Class One, Grade Five?
The school organized a summer vacation tour. A * * used 10 cars, each bus took 100 people, each bus took 60 people, and the bus took 520 more people than the bus. How many buses are there?
It takes 6 hours and 30 minutes for the plane to fly between two cities with downwind and 7 hours against wind. The known wind speed is 26 kilometers per hour. What is the distance between the two cities?
6. Party A and Party B depart from AB at the same time. If they drive in the same direction, 13 minutes later, Party A will catch up with Party B ... If two people go in opposite directions, they will meet in 3 minutes. B is known to travel 25 kilometers per minute. How many meters is there between AB and B?
7. There are 42 large, medium and small trucks, each carrying 3 15 boxes. It is known that each large truck can hold 10 boxes at a time, each medium truck can hold 8 boxes at a time, and each small truck can hold 5 boxes at a time. How many big trucks are there?
8. Spiders have eight feet, dragonflies have six feet and two pairs of wings, and cicadas have six feet and a pair of wings. Now there are three kinds of bugs *** 16, * * * 18 legs, 14 pairs of wings. How many bugs are there in each bug?
9. The school organized a New Year's party. There are 232 prize pencils, ballpoint pens and pens with a value of 100 yuan, of which the number of pencils is four times that of ballpoint pens. Known pencil each 0.2 yuan, ballpoint pen each 0.9 yuan, pen each 2. 1 yuan. How much are these three pens worth?
10, a two-digit number, the unit number is three times that of the ten-digit number. If the number of ten digits and the number of one digit are reversed, the two digits obtained are 54 larger than the original number, and the original two digits are found.
1 1, double digits. The sum of one digit and ten digits is 10. If the number in the decimal digit is interchanged with the number in the decimal digit, the new number will be 36 less than the original number. How about the original two digits?
12. There is a three-digit number, and the sum of its digits is 16. Ten digits is the sum of one digit and one hundred digits. If the hundred digits and one digit are reversed, then the new number is 594, then what is the original number?