Since Alex is 13th from the leftmost end and Jeevan is 12th from the rightmost end, we have the following:
Number of kids between Alex and Jeevan = 4.
Alex’s position from the leftmost end is 13 inches, and Jeevan’s position from the rightmost end is 12 inches.
Conclusion: Thus, the total number of kids is 13 + 4 +12 = 29. Therefore, the total number of kids is (C)
Arun’s present age in years is 40% of Barun’s. In another few years, Arun’s age will be half of Barun’s. By what percentage will Barun’s age increase during this period?