In a row of 40 girls, when Purnima was shifted to her left by 4 places, her number from the left end of the row became 10. What was the position of Swati from the right end of the row if Swati was three places to the right of Purnima's original position?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 24th
Step 1: Find Purnima's original position
Let Purnima's original position from the left = x
She is shifted 4 places to the left, then her new position = x - 4
Given: new position = 10
$x−4=10⟹x=14$
Purnima's original position from left = 14
Step 2: Find Swati's position from left
Swati is 3 places to the right of Purnima's original position:
$\text{Swati's position from left} = 14 + 3 = 17$
Step 3: Convert to position from right
Total girls = 40
$\text{Position from right} = 40 - 17 + 1 = 24$