The weight of cement on the construction site is two-thirds of that of yellow sand. Twelve tons of cement and fifteen tons of yellow sand are used every day. After a few days, it will be followed up The cement is just used up. There are 12 tons of yellow sand left. How many tons of original cement are there on the construction site?

The weight of cement on the construction site is two-thirds of that of yellow sand. Twelve tons of cement and fifteen tons of yellow sand are used every day. After a few days, it will be followed up The cement is just used up. There are 12 tons of yellow sand left. How many tons of original cement are there on the construction site?

Let the number of days be x days
12x/(15x+12)=2/3
The solution is x = 4
So cement weight = 12x4 = 48 (tons)

When a batch of cement is delivered to the construction site, Party A will give the remaining cement to Party A and Party B at a ratio of 2:3. Team a will get 24 bags, and how many bags will team B get?

22 ^ [(1-14) × 22 + 3 + 14] - 22, = 22 ^ [34 × 25 + 14] - 22, = 22 ^ [310 + 14] - 22, = 22 ^ [1120-22, = 40-22, = 18 (bags); a: Team B gets 18 bags

When a batch of cement is delivered to the construction site, Party A will give the remaining cement to Party A and Party B at a ratio of 2:3. Team a will get 24 bags, and how many bags will team B get?

22 ^ [(1-14) × 22 + 3 + 14] - 22, = 22 ^ [34 × 25 + 14] - 22, = 22 ^ [310 + 14] - 22, = 22 ^ [1120-22, = 40-22, = 18 (bags); a: Team B gets 18 bags

After a batch of cement is distributed to one fifth of the first construction team, the rest is distributed to the second, third and fourth construction teams according to the ratio of 3:4:5. The fourth construction team has 400 packets of cement. How many packets are there in total?

3+4+5=12
The fourth team scored all (1-1 / 5) X5 / 12 = 1 / 3
This batch of cement has a total of 400 / 1 / 3 = 1200 bales