An elephant in the park eats 350 kilograms of food a day, and the keeper has prepared 5 tons of food, which is enough for the elephant to eat for 20 days?

3. The school should add two new books to the library, one is an encyclopedia for children, each set is 125 yuan, and the other is a mathematical conjecture, each set is 18 yuan, each set is 3 sets, and how much is it?

4. Each set of large sportswear 145 yuan, each set of small sportswear 128 yuan, 34 sets of large sportswear and 25 sets of small sportswear.

(1) How much are two kinds of sportswear?

(2) How much does a * * * cost?

5. The school needs to add 44 sets of desks and chairs, each desk 128 yuan and each chair 17 yuan. How much will it cost?

6. It took a car five hours to walk from A to B at a speed of 64 km/h and only four hours to come back. What is the speed of the car when it returns?

7. Xiaohong's family traveled by car. The speed of the car is about 65 kilometers per hour. It took six hours on the first day and seven hours on the second day. How many kilometers have you walked in two days?

8. On Sunday, Wang Liang went mountain climbing. It took him 15 minutes to climb from the foot of the mountain to the top, and it took him 9 minutes to return to the foot of the mountain from the original road. As we all know, the speed of climbing mountains in Wang Liang is 60 meters per minute.

(1) How far is it from the foot of the mountain to the top of the mountain?

(2) How many meters did Wang Liang walk every minute when he came back?

9. A car travels from A to B at a speed of 60 km/h for three hours, and then at a speed of 80 km/h for two hours, just arriving at B. How many kilometers is there between A and B?

10. The price of 2 kilograms of apples and 3 kilograms of bananas in the convenience fruit shop is 10 yuan. Mother is going to buy 6 kilograms of apples and bananas each. How much should she pay?

1 1. Teacher Zhang brought 5000 yuan to buy 25 identical tape recorders for the school. The price of each tape recorder in the store is 154 yuan, 176 yuan, 198 yuan and 2 16 yuan. How many kinds of purchase schemes does teacher Zhang have? How much is left?

12. The school is going to issue exercise books to class 15, each class 144 copies, and 40 copies need to be reserved. How many exercise books should schools buy?

13. The road team built a road, and it needs to be repaired every day 165 meters. It has been built for 18 days, and it still needs 120 meters to complete the task. How long is this road?

14. Teacher Zhang bought basketball with 450 yuan. How many basketballs can 27 yuan buy for each basketball? How much is left?

15, Xiaojun walked 640 meters in 8 minutes. At this speed, it takes him 15 minutes to walk from home to school. How far is his home from school?

16. The printing house binds a book with 32 copies each, and can bind 140 copies. If there are 35 copies each, how many copies can you bind?

17, the fruit shop shipped 150 kg of apples, and the pears shipped were twice as much as apples by 60 kg. How many kilograms of fruit did the fruit shop send?

18, the students went for an autumn outing. After driving for two hours at a speed of 38 kilometers per hour, the bus is still 8 kilometers away from its destination. If it takes 2 hours to return, what is the return speed?

19, a train has 12 hard-seat carriages, and each carriage has 108 seats; In addition, there are 160 passengers in berth * *. If this train is full, how many passengers are there in berth * * *?

20. The factory bought back a batch of coal and planned to burn 45 kilograms a day, which can last for 26 days. It actually burned for 30 days. How many kilograms are burned on average every day?

2 1. The store shipped 15 TV sets, each with a price of 856 yuan. How much can I earn after selling it all?

22. a car 15 hours drives 675 kilometers. What is the speed of the car?

23. From place A to place B, Xiaohua walks 6 kilometers per hour and arrives in 25 hours. If it takes three hours to drive, what is the speed?

24. Xiaolin's orchard harvested 3 10 Jin of pears this year, and the harvested apples were 19 times that of pears. About how many kilograms of apples were collected?

25. A bus travels for 3 hours 174 km. At this speed, how many kilometers can 12 hour travel?

26. A titmouse ate about 800 pests in five days. According to this calculation, how many pests can a titmouse eat in a month? (30 days a month)

27. Grandpa Zhang bought three lambs and spent 75 yuan. He also wants to buy five more such lambs. How much does he need to prepare?

28, 5 boxes of bees can brew 375 kilograms of honey a year. Xiao Wang keeps 12 boxes of such bees. How many Jin of honey can he brew a year?