SOLUTION: a given type of concrete contains twice as much sand as cement and 1.5
times as much gravel as sand.how many cubic yards of each must be used to make 9 yd3 of concrete? assume no
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-> SOLUTION: a given type of concrete contains twice as much sand as cement and 1.5
times as much gravel as sand.how many cubic yards of each must be used to make 9 yd3 of concrete? assume no
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Question 723060: a given type of concrete contains twice as much sand as cement and 1.5
times as much gravel as sand.how many cubic yards of each must be used to make 9 yd3 of concrete? assume no loss of volume in mixing. Answer by josgarithmetic(39625) (Show Source):
You can put this solution on YOUR website! x = amount sand
y = amount cement
z = amount gravel
x/y=2. This means x=2y. Also, means y/x=1/2, so .
z/x=1.5. This means .
Want 9 yd^3 of concrete. .
Using the above substitutions allows to express everything in terms of just x.
...continue from here to solve and finish for x, y, and z.
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