In a row of students, Rima is 12th from the left and Sita is 18th from the right. If they interchange their positions, Rima becomes 25th from the left. How many students are there in the row?
Show answer & explanation
Correct answer: D
Explanation
Reema and Sita switch places, so Reema takes the same spot as Sita.
Sita's position from the left = 25
Total number of students
Total = (position from the left) + (position from the right) − 1
= 25 + 18 − 1
= 42