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

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#1

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.