Sachin and Aarti are ranked 14th and 18th respectively in a class of 45. What are their respective ranks from the last.

32th & 28th

Total number of students = Rank from top + Rank from bottom - 1 

Sachin rank from last, 

Total number of students = Rank from top + Rank from bottom - 1 

rank from last = 45 + 1 - 14 = 32

Aarti rank from last, 

Total number of students = Rank from top + Rank from bottom - 1 

rank from last = 45 + 1 - 18 = 28

 Ans. 32th & 28th