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How do i do these two while using a proportion?
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How do i do these two while using a proportion?

How do i do these two while using a proportion?-example-1
User MarioH
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for #2, the proportion would be .40/.25 and x/15, then you would cross multiply to find x. and for #3 the proportion would be 15/6 and 75/x and again you would cross multiply to find x. (:
User Serge Rogatch
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