40 tangs of a mixture of sand and gravel is 30% sand. how many tangs of sand must be added to produce a mixture which is 40% gravel - QAmmunity.org

40 tangs of a mixture of sand and gravel is 30% sand. how many tangs of sand must be added to produce a mixture which is 40% gravel

asked Jul 10, 2023 170k views

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