F the temperature is 43 degrees Fahrenheit, how long does it take for the cricket to chirp 12 times?

If the temperature is 43 degrees Fahrenheit, how long does it take for the cricket to chirp 12 times?
A. 12s
B. 24s
C. 43s
D. 52s

Answer:

when,T = 43s, Number of chirps per 13 seconds is image
Therefore there are 3 chirps in 13s.
Therefore time taken for one chirp is image
Therefore time taken to chirp 12 times is image
Therefore option D. is correct.