In a row of girls is $29^{th}$ from the right and Kiran is $19^{th}$ from the left when they interchange their position, Manika becomes $34^{th}$ from the right. What is the total number of girls in the row ?

52

Method,

Initial position of Kiran from left+New position of Manika from right−1=Total number of girls in the row

Here:

Kiran's initial position from the left is 19.

Manika's new position from the right is 34.

Let's plug in these values into the equation: 19+34−1=52

Therefore, the total number of girls in the row is 52