2.4:5.2

It looks like you've provided the ratio 2.4 : 5.2. If you'd like to simplify this ratio, here's the process:

1. Divide both numbers by their greatest common divisor (GCD) or simply simplify by dividing both by the same number.

Let's simplify:

• Divide both numbers by 0.4:

\[ \frac{2.4}{0.4} = 6 \]

\[ \frac{5.2}{0.4} = 13 \]

So, the simplified ratio is 6 : 13.

If you need it in another form or further explanation, please let me know!