SOLUTION: please solve this problem.
A certain concrete mixture contains 6.00% cement and 8.00% sand.
How many kilograms of this mixture and how many kilograms of sand should be co
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Question 1054016: please solve this problem.
A certain concrete mixture contains 6.00% cement and 8.00% sand.
How many kilograms of this mixture and how many kilograms of sand should be combined with 235 kg of cement to make a batch that is 14.0% cement and 16.0% sand? Carry out all calculations exactly and round to three significant digits final answers only.
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Thinking about a three-part mixture is more difficult than to think about a two part mixture.
s, how much of 100% sand;
235 kilograms, how much of100% cement;
m, how much of the "concrete" mixture at 6.00% cement and 8.00% sand.
These equations are using decimal numbers and not any quantities as percents:
Account for the desired percent cement.
Account for the desired percent sand.
The arithmetic should be easier than to do the analysis shown, so you could take care of that arithmetic.
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