The Usual Method
Estimated Time to arrive at the answer = 30 seconds.
Just by observing you can make out that the numerator has a higher value of power of base 3 and the denominator has a higher value of power of base 2. Hence, the answer has to have 3 in the numerator and 2 in the denominator. The only option satisfying these conditions is option ‘3’.
Estimated Time to arrive at the answer = 5 seconds.