Answer :

To find out how much 84 kg of salt will cost if 400 kg of salt costs sl.z. 50, follow these steps:

1. Determine the cost per kg:
- First, find out the cost of 1 kg of salt. Since 400 kg costs sl.z. 50, you can calculate the cost per kg by dividing the total cost by the total weight:

[tex]\[
\text{Cost per kg} = \frac{50}{400} = 0.125 \, \text{sl.z. per kg}
\][/tex]

2. Calculate the cost for 84 kg of salt:
- Now that you know the cost per kg, you can calculate the cost for 84 kg by multiplying the cost per kg by 84:

[tex]\[
\text{Cost for 84 kg} = 0.125 \times 84 = 10.5 \, \text{sl.z.}
\][/tex]

So, 84 kg of salt will cost sl.z. 10.5.

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