Question

The velocity of sound in air would become double than its velocity at 20(C is:
(a) 313 K (b) 586 K (c) 899 K (d) 1172 K
Show solution pls

Answer 1

I think (c)899K is the correct answer
as the speed of sound increases by 0.6 metre per second when the temperature increases by 1 Degree Celsius.