Comprehension Passage
Directions: Answer the question based on the information given below:
Given below Pie chart shows the distribution of distance traveled by five different trains (Rajdhani Express, Shatabdi Express, Train 18, Maharaja Express, and Vivel Express out of a total distance of 3200 km.
Table given below shows the average speed and time taken by these five trains to cover the distance.
Note: Some values in the pie chart and table are missing. You have to calculate those missing values and answer the questions accordingly.
Consider all values in positive integers only.
| Trains | Speed (in km per hour) | Time (in hours) |
| Rajdhani Express | --- | 9 |
| Shatabdi Express | --- | 5 |
| Train 18 | 64 | 10 |
| Maharaja Express | 120 | --- |
| Vivek Express | --- | 20 |
If Train 18 had travelled half its distance at a speed of y km per hour and remaining at a speed of 80 km per hour, then find the value of y (in kmph).
1
160/3
2
180/7
3
150/9
4
140/9
5
120/7