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  4. If q r: p r: p q=1: 4: 7, then find (p/q r): (q/p r).

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Q. If $q r: p r: p q=1: 4: 7$, then find $\frac{p}{q r}: \frac{q}{p r}$.

Ratio, Proportion, and Variation

Solution:

Simplify the required ratio.