Question

5m of soil containing 50% silt was mixed into 3 m of soil containing 10% silt. What is the silt content of the mixture?

Answer 1

5(.5) + 3(.1) = 8(x)

2.5 + .3 = 8x

2.8 = 8x

2.8/8 = x

1.4/4 = .7/2 = .35

35%

Answer 2

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