cost per kg of the mixture is $6 per kg .
<u>Step-by-step explanation:</u>
Here we have , 20 kg of baking flour was made by combining 15 kg of bleached flour which costs $7/kg with 5 kg of unbleached flour which costs $3/kg.We need to find Find the cost per kg of the mixture. Let's find out:
20 kg of baking flour was made by combining
- 15 kg of bleached flour which costs $7/kg
Cost of bleached flour is :
⇒ ![15(7)](https://tex.z-dn.net/?f=15%287%29)
⇒ ![\$105](https://tex.z-dn.net/?f=%5C%24105)
- 5 kg of unbleached flour which costs $3/kg
Cost of unbleached flour is :
⇒ ![3(5)](https://tex.z-dn.net/?f=3%285%29)
⇒ ![\$15](https://tex.z-dn.net/?f=%5C%2415)
Hence , total cost of mixture is $105+$15 = $120.
Now , cost per kg of the mixture :
⇒ ![\frac{120}{20}](https://tex.z-dn.net/?f=%5Cfrac%7B120%7D%7B20%7D)
⇒ ![\frac{20(6)}{20}](https://tex.z-dn.net/?f=%5Cfrac%7B20%286%29%7D%7B20%7D)
⇒ ![6](https://tex.z-dn.net/?f=6)
Therefore , cost per kg of the mixture is $6 per kg .