600:500

The ratio of 600 to 500 can be simplified by dividing both numbers by their greatest common divisor (GCD).

The GCD of 600 and 500 is 100.

So, simplifying the ratio, we get:

600 ÷ 100 : 500 ÷ 100 = 6 : 5

Therefore, the simplified ratio of 600 to 500 is 6:5.