Consider Statement 2: Anjali took Ride-1 at 11 am after waiting for 30 minutes for Chitra to complete it. It was the only ride where Anjali waited.
This implies that Chitra took Ride 1 at 10 am. Now we also know that she spent Rs 50 and that she left at 11 am. Now, since she did one ride costing Rs 20 at 10, she must have taken Ride-3 at 9 am.
So we get the following table for Chitra.
| | Ride 3 | Ride 1 |
|---|
| Time | 9 am- 10 am | 10 am- 11 am |
| Cost | Rs 30 | Rs 20 |
Now we know that Chitra and Anjali spent Rs 50 before
12:15 pm. It is not possible for Anjali to go on Ride-3 at 10 am as we know that she was waiting for 30 minutes before taking Ride-1 (She was waiting from 10:30 am).
Now, since we know that Ride- 1 was the only ride for which she waited, we can say that she took Ride- 1 at 11 am and started Ride-3 at 12 am
So we get the following table for Anjali.
| | Ride-1 | Ride-3 |
|---|
| Time | 11am−12pm | 12pm−1pm |
| Cost | 20 | 30 |
Now, we know that Bipasha started her first ride at
11:30am. We also know that they all spent Rs 50 before 12:15 pm.
Therefore, the first ride Bipasha takes will be Ride-2, costing Rs 50 .
So we get the following table for Bipasha.
| | Ride-2 | |
|---|
| Time | 11:30 am- 12:30am | |
| Cost | 50 | |
We know that Ride 3 stops at 1 pm. So the last ride taken by Anjali will either be Ride- 2 or Ride- 4 . Now, considering Statement 4,we know that the last ride taken by Anjali and Bipasha was same and that Bipasha rode it after Anjali. So their last ride can't be 2.
So the last ride of both Bipasha and Anjali will be 4 .
Now if we assume that immediately after ending Ride-3, Anjali goes to Ride-4, then the last ride of Bipasha will be Ride- 4 from 2 pm - 3 pm. But we know that Bipasha rode 3 rides. So this case is not possible.
Since Anjali didn't have any break or waiting time, the only ride she can ride at
1pm will be Ride 2 and then she will go on Ride-4 from
2pm to
3pm.
So we get the following table for Anjali:
Now we know that the last ride that Bipasha took was Ride- 4 and that she had a gap of
1.5hrs before it. This is only possible when she takes one ride between Ride-2 and Ride-4. Since Ride- 3 is closed at
1pm, she can only take Ride 1. So we get the following table for her.
Anjali completed a total of 4 rides, 3 of which were completed at 2. Therefore the answer is Option B: Ride-1, Ride 3, and Ride -2