Problem 947

Solve the proportion for N.





Find the cross products.

25(3)  = 5N

75 = 5N

Divide both sides of the equation by the known factor to isolate the unknown value.

\frac{75}{5}= \frac{5N}{5}

Now simplify

N = 15

Check the solution by substituting the answer in the original equation and verifying that a true statement results.

The answer checks, so the solution of the proportion is 15.


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