To express the ratio ₹5.60 to 800 paise in simplest form, we need to convert both values to the same unit.

1 rupee = 100 paise

So, ₹5.60 = 5 rupees + 60 paise = 5 * 100 paise + 60 paise = 500 paise + 60 paise = 560 paise.

Now, the ratio becomes 560 paise to 800 paise.

To simplify this ratio, we can divide both values by their greatest common divisor (GCD), which is 40.

560 paise ÷ 40 = 14 800 paise ÷ 40 = 20

Therefore, the simplest form of the ratio ₹5.60 to 800 paise is 14:20, which can be further simplified to 7:10 by dividing both values by their GCD, which is 2.