From Vadodara station, if we buy two tickets to station P and three tickets to station Q, the total cost is Rs. 77, but if we buy 3 tickets to station P and 5 tickets to station Q, the total cost is Rs. 124. The fare from Vadodara to P is:
1
Rs. 13
2
Rs. 14
3
Rs. 18
4
Rs. 20