Thank you for the clarification! Let's update the solution with the corrected distance for the autorickshaw.

Updated Problem:

Mayank:

• Walked $\frac{3}{8}$ km to reach the autorickshaw stand.
• Travelled $\frac{7}{4}$ km in an autorickshaw.
• Travelled $\frac{15}{6}$ km in the metro to reach his office.

Updated Solution:

Step 1