Question

Find the compound ratio of:

2 : 3, 9 : 14, and 14 : 27

• A. 2 : 5
• B. 3 : 5
• C. 2 : 9
• D. 3 : 4

Answer 1

The correct option is C

2 : 9

For ratios a : b and c : d; the compound ratio is $(a\times c):(b\times d)$

$\therefore$ Required compound ratio $=(2\times 9\times 14):(3\times 14\times 27)$

$=\frac{2\times 9\times 14}{3\times 14\times 27}=\frac{2}{9}=2:9$