Relative ranks from the end — compute from class size Ravi is 7 ranks ahead of Sumit in a class of 39. Sumit is 17th from the last. What is Ravi’s rank from the start?

Introduction / Context:
Convert a “from last” rank to “from start,” then adjust for the comparative difference.

Step-by-Step Solution:
Sumit from start = 39 − 17 + 1 = 23rd.Ravi is 7 ranks ahead ⇒ 23 − 7 = 16th.

Verification / Alternative check:
From last for Ravi: 39 − 16 + 1 = 24th, which is 7 better than Sumit's 23rd from start (consistent direction).

Final Answer:
16th