a) Rs. 9,47,400

b) Rs. 7,47,400

c) Rs. 5,47,400

d) Rs. 3,47,400

correct answer is:

a) Rs. 9,47,400

Explanation

We know,
1 couple = 2 persons
\therefore 12 couples =\left(12\times2\right) persons
\rightarrow 24 persons.
According to the question,
1 person travelling cost from Kolkata to Singapore is Rs. 39,475
\therefore 24 person travelling cost from Kolkata to Singapore is Rs. \left(39,475\times24\right)
\rightarrow 9,47,400
Ans: 12 couples travelling cost from Kolkata to Singapore is Rs. 9,47,400.