15600:65

To simplify the ratio 15600:65, you can divide both numbers by their greatest common divisor (GCD).

1. Find the GCD of 15600 and 65. The GCD is 5.

2. Now, divide both numbers by 5:

   \[ \frac{15600}{5} = 3120 \] \[ \frac{65}{5} = 13 \]

So, the simplified ratio is 3120:13.