Due to 25% fall in the rate of eggs, one can buy 2 dozen eggs morethan before by investing Rs.162. Then the orignal rate per dozen of the eggsis

Let original rate per dozen is 100.

25% fall in original rate means the new price is 75.

That means 75 is equivalent to 162.

Therefore 100 is equivalent to:

(162*100)/75 = 216

That means original price was 216 and the price after decrement is 162.

So the person can now buy 2 more dozens of egg by saving 216-162 = 54 Rs.

2 dozens in 54 means 1 dozen in 27.

Hence the original price of 1 dozen egg is rs.27.

Hence answer is option c