Solution: (12.4 *12+1.5)/9-12.4 = 4.3 tons.
2. After cutting a small cube 6 cm long from the cuboid, the rest is a cuboid with a volume of 180 cubic centimeter. What is the longest side of the original cuboid?
Solution:180/36+6 =11.
3. For a project, Team A can complete 1/3 of the whole project alone within 5 days, while Team B can complete 1/4 of the whole project alone within 3 days. How many days does it take for two teams to cooperate to complete 3/5 of the whole project?
Solution: 3/5 divided by (115+112) = 4.
4. The road team built121/4km on the first day and 8.75km on the second day, which is exactly 1/30 of this road. How many kilometers is this road?
Solution: (12+1/4+8.75) * 30 = 630.
5. A cuboid wood with a width of 3m and a thickness of 20cm and a volume of 0. 12m3. What is the largest area of this piece of wood on the ground?
Solution: 0.12/0.3/0.2 = 22 * 0.3 = 0.6m2.
6. The construction team built a road with a length of 1.600 meters, and the whole length was 1/5 in the first four days. According to this calculation, how many days will it take to complete the rest of the road?
Solution: (1600-1600/5)/(1600/5/4) =16.
7. The length, width and height of the cuboid fuel tank are 50 cm, 24 cm and 40 cm respectively. If 38.4 liters of kerosene is put in it, how many centimeters is the oil level from the tank mouth?
Solution: 40-[38.4/(5 * 2.4)] *10 = 8 cm.
A rectangular swimming pool is 50m long, 30m wide and1.5m deep. Tiles are attached to the four walls and bottom of the pool. If you use 40 tiles per square meter, how many tiles do you need?
Solution: [(50 *1.5) * 2+(30 *1.5) * 2+(50 * 30)] * 40.
9. Master Zhang processed a batch of parts. 363 pieces were processed in the first three days, and then 135 pieces were processed every day. During this week (five days), how many parts does Master Zhang process every day?
Solution:
10. If the molecule adds 1, the simplest score can be 3/4, and if the molecule subtracts 1, the simplest score can be 1/2. What's the simplest score?