#979 · Algebra · Functions

Joint variation with two variables

$A$ varies jointly as $B$ and $C$ ; if $A = 2$ when $B = \frac{3}{5}$ and $C = \frac{10}{27}$ , find $C$ when $A = 54$ and $B = 3$ .

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H. S. Hall & S. R. Knight, Higher Algebra (1891) · Ch. III. Variation, Examples III, No. 4

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Checked against the answer in H. S. Hall & S. R. Knight, Higher Algebra (1891).