Directions : Questions : 220 guests are to be trans- ported from A to B. Any number of buses of the following passenger carrying capacities are available.
Type P : 60, Type Q : 50, Type R : 40, Type S : 30
The cost per trip for a bus of each of these types is given as follows :
Type P : Rs 200, Type Q : Rs 140, Type R : Rs 125,
Type S : Rs 95
No buses can be overloaded and prefer no vacant seats in each trips.
The second cheapest trip arrangement would involve
Explanation
1. Bus Specifications:
| Bus Type | Capacity | Cost (Rs) | Cost per Seat (Rs) |
| :--- | :--- | :--- | :--- |
| P | 60 | 200 | 3.33 |
| Q | 50 | 140 | 2.80 |
| R | 40 | 125 | 3.125 |
| S | 30 | 95 | 3.16 |
2. Possible Combinations for 220 seats:
-
Combination A (3Q + 1R + 1S):
-
Combination B (2Q + 3R):
-
Combination C (1Q + 3R + 1S + ?): (Not possible to hit exactly 220 easily here)
-
Combination D (2P + 2Q):
-
Combination E (1P + 2Q + 1R + 1S):
3. Comparison of Valid Costs:
-
Rs 640 (3Q, 1R, 1S)
-
Rs 655 (2Q, 3R)
-
Rs 680 (2P, 2Q)
-
Rs 690 (4R, 2S)
Conclusion:
The cheapest trip is Rs 640, and the second cheapest arrangement costs Rs 655.
Correct Option: (d) Rs 655