Solve for x
n= 2x+1 / 2
x=...
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Ametalworker has a metal alloy that is 30? % copper and another alloy that is 55? % copper. how many kilograms of each alloy should the metalworker combine to create 90 kg of a 50? % copper? alloy?
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Ron has 8 caps and 4 of his caps are blue. thes rest of his cap are red. how many of ron's caps are red
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