SOLUTION: Kayla and her brother mixed together some soil and some silt to make 12 m^3 of soil with a 75% silt content. They used 7 m^3 of silt and 5 m^3 of a soil they purchased. What was th

Question 939697: Kayla and her brother mixed together some soil and some silt to make 12 m^3 of soil with a 75% silt content. They used 7 m^3 of silt and 5 m^3 of a soil they purchased. What was the silt content of the soil they purchased?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let the m^3 of silt in the soil they purchased =
Total amount of silt in their mix =
-----------------------

There is 2 m^3 of silt in the 5 m^3 soil they purchased

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