Answer:
1:16.
Step-by-step explanation:
The given ratio of 25cg : 4g.
Here, cg is centigram and g is gram.
We know that,
1 g = 100 cg
So, 4 g = 400 cg
Now, using this conversion we get
[tex]\dfrac{25\text{ cg}}{4\text{ g}}=\dfrac{25\text{ cg}}{400\text{ cg}}[/tex]
[tex]\dfrac{25\text{ cg}}{4\text{ g}}=\dfrac{1}{16}[/tex]
[tex]25\text{ cg}:4\text{ g}=1:16[/tex]
Therefore, the required ratio is 1:16.
