What is the speed of light in a medium of refractive index 6/5 if its speed in air is 3,00,000 km/s?

Refractive index of medium = 6/5 = 1.2 Speed of light in air = 3,00,000 km/s

We know that, refractive index of the medium = (speed of light in air)/(speed of light in medium)

1.2 = (300000)/(speed of light in medium) Speed of light in medium = 2500000 km/s