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Let's take the formula instead of the solution of the equation 1. For a project, Party A and Party B work together for 8 days. Now, Party A and Party B work together for 5 days, and the remaining party a work alone for 6 days. How many days does it take for Party A and Party B to complete the project separately 2. Buy back a batch of basketball, volleyball and football. It is known that basketball accounts for 25% of the total. Football is 40 more than basketball. The ratio of volleyball and football is 3:2. How many balls are there in total 3. Cut a cube wood block with an edge length of 90cm into a cylinder with the largest volume. What is the volume of this cylinder? If it is cut into a cone with the largest volume 4. The roller is a cylinder with a width of 1.5m. The radius of the cross section of the roller is 10 decimeters. How many square meters of road can be rolled in 15 minutes based on rolling 8 circles per minute 5. The passenger car and the freight car drive from ab at the same time. When the two cars meet, the passenger car takes 70% of the total length. The freight car is 400 kilometers away from the midpoint. It takes 20 hours for the passenger car to complete the whole journey. How many kilometers does the passenger car walk per hour
1. 2. Basketball accounts for 25%, that is, the total number of football and volleyball is 75%, and the ratio of volleyball and football is 3:2, then the ratio of volleyball to football is 3:2
Typical application problems in mathematics do not need equations, only formulas
It took six minutes, eight minutes and ten minutes for the three vehicles to catch up with the cyclist. It is known that car a travels 1000 meters per minute, car B 800 meters per hour, and car C how many meters per minute?
Car B travels 800 meters per minute
Speed of car C: (800 * 8-1000 * 6 + 800 * 8) / 10 = 6800 / 10 = 680m / min
I fainted to death
There are two warehouses. The inventory of warehouse A is more than twice that of warehouse B. 80. Warehouse a delivers 340 to warehouse B, so the inventory of warehouse A and warehouse B is the same. How much is the original inventory of warehouse B? Please give the equation
I always think it's a problem. Who can help me to look at it
Set: the original inventory of Party A and Party B is x, y
X-2Y=80 X=2Y+80
X-340=Y+340
2Y+80-340=Y+340
Y=600
X=1280
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