SOLUTION: 2 m cubed of soil containing 35% sand was mixed into 6 m cubed of soil containing 15% sand. What is the sand content of this mixture?

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Question 363207: 2 m cubed of soil containing 35% sand was mixed into 6 m cubed of soil containing 15% sand. What is the sand content of this mixture?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi, 

Let x/100 represent the % of that mixture

.35*2m^3 + .15*6m^3 = x/100*8m^3

1.60/8m^3 = x/100

.20 = x/100

20% = x  the % of sand in this mixture

.20*8 = 1.6m^3 of sand in that new mixture



checking our answer

.7m^3  + .9 m^3 = 1.6m^3