In a row, the position of Manu from the left is twice his position from the right. If the row has 30 people, what is Manu's position from the left?

Question

Accepted Answer

(B) 20th. Explanation: Let position from left = L. Position from right = 30+1-L = 31-L. Given L = 2(31-L). L = 62-2L. 3L = 62. L ≈ 20.67. Closest integer: if L=20, from right=11, 20=2×11=22 ✗. If L=21, from right=10, 21=2×10=20 ✗. Hmm. Let's try total=30: L = 2(30+1-L) → L=2(31-L) → L=62-2L → 3L=62 → not integer. This means the question has an issue with 30 people. Let me reconsider with total people where it works: L=2R, L+R=total+1. 2R+R=total+1, 3R=total+1. For total=29: 3R=30, R=10, L=20. So position 20 from left. Likely the row has 29 people but question says 30, so answer is approximately 20th = B.