Ratio and Proportion — MATHS STD 7 — Question

3. 5 : 1

Solution:

Since,

$\frac{1}{12}:\frac{1}{60}$

$=\frac{1}{12}\div\frac{1}{60}$

$=\frac{1}{12}\times\frac{60}{1}$

$=\frac{60}{12}$

$=\frac{5}{1}$

$=5:1$

Hence, the correct alternative is option (c).