Given Information:
- Number of chests of tea: 15
- Weight of each chest: 20 kg
- Cost of 15 chests: 350 rs

Calculating Cost per kg of Tea:
To find the cost per kg of tea, we can divide the total cost by the total weight of tea.

Total weight of tea = Number of chests × Weight per chest
= 15 × 20 kg
= 300 kg

Cost per kg of tea = Total cost / Total weight of tea
= 350 rs / 300 kg
= 1.17 rs/kg (rounded to two decimal places)

Calculating the Price for 12 chests of tea, each containing 25 kg:
To find the price for 12 chests of tea, each containing 25 kg, we can use the cost per kg of tea calculated above.

Total weight of tea = Number of chests × Weight per chest
= 12 × 25 kg
= 300 kg

Total cost = Total weight of tea × Cost per kg of tea
= 300 kg × 1.17 rs/kg
= 351 rs

Therefore, the price for 12 chests of tea, each containing 25 kg, would be 351 rs.

Explanation:
- The given information states that there are 15 chests of tea, with each chest containing 20 kg. The total cost for these 15 chests is 350 rs.
- To find the cost per kg of tea, we divide the total cost by the total weight of tea, which is 300 kg in this case.
- By dividing 350 rs by 300 kg, we find that the cost per kg of tea is 1.17 rs/kg (rounded to two decimal places).
- Next, we need to calculate the price for 12 chests of tea, each containing 25 kg. The total weight of tea in this case is 12 chests × 25 kg = 300 kg.
- Using the cost per kg of tea calculated earlier, we multiply it by the total weight of tea (300 kg) to find the total cost, which comes out to be 351 rs.
- Hence, the price for 12 chests of tea, each containing 25 kg, would be 351 rs.

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