Question 1042826: The volume of a mixture of sand, gravel, and cement are in the ratio of 2 to 1 to 3. If 1 cubic foot of each item weighs 30, 40, and 20 pound respectively, what is the ratio of the weights of sand to gravel to cement in this mixture?
A) 3:1:2
B) 3:2:3
C) 2:1:3
D) 3:1:3
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! The volume of a mixture of sand, gravel, and cement are in the ratio of 2 to 1 to 3. If 1 cubic foot of each item weighs 30, 40, and 20 pound respectively, what is the ratio of the weights of sand to gravel to cement in this mixture?
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Volume
sand = 2x
gravel = x
cement = 3x
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Weight::
sand:: 2x*30 = 60x
gravel:: x = 40x
cement:: 3x*20 = 60x
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Ratio of weights::
60x:40x:60x = 3:2:3
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Cheers,
Stan H.
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A) 3:1:2
B) 3:2:3
C) 2:1:3
D) 3:1:3
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