Question 1165368
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A nontoxic furniture polish can be made by combining vinegar and olive oil. 
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The amount of oil(first material) should be three times the amount of vinegar(second material). How much of each ingredient is needed in order to make 14 oz of,..
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The arithmetic you could be looking for is like:
v, how much the second material
3v, how much the first material

{{{v+3v=14}}}

{{{4v=14}}}

{{{v=7/2}}}

{{{v=3&1/2}}}{{{ounces}}}