SOLUTION: A certain concrete mixture contains 4.00% cement and 5.00% sand. How many kilograms of this mixture and how many kilograms of sand should be combined with 225 kg of cement to make

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Question 1069233: A certain concrete mixture contains 4.00% cement and 5.00% sand. How many kilograms of this mixture and how many kilograms of sand should be combined with 225 kg of cement to make a batch that is 13.0% cement and 14.0% sand? Carry out all calculations exactly and round to three significant digits final answers only.
Answer by josgarithmetic(39623) About Me  (Show Source):
You can put this solution on YOUR website!
See the other posting for the correct setup of equations for this problem.

#1069196
https://www.algebra.com/algebra/homework/Rate-of-work-word-problems/Rate-of-work-word-problems.faq.question.1069196.html