Question

what is compound ratio

Answer 1

The product of two or more ratios; thus ab:cd is a ratio compounded of the simple ratios a:c and b:d.

Answer 2

Compounded ratio: For two or more ratios, if we take antecedent as product of antecedents of the ratios and consequent as product of consequents of the ratios, then the ratio thus formed is called mixed or compound ratio. ... For ratios m : n and p : q; the compound ratio is (m × p) : (n × q).