In a Bank ATM queue, A is 22 from the back of the queue and B is 12 from the…
2023
In a Bank ATM queue, A is 22 from the back of the queue and B is 12 from the front of the queue. There are four people ahead of A to reach B. If three people got money from an ATM and left the queue, what was the position of A from the front?
- A.
12
- B.
14
- C.
13
- D.
None
Attempted by 6 students.
Show answer & explanation
Correct answer: B
Solution:
Let the total number of people in the queue be N. A is 22nd from the back, so A's position from the front is N - 21.
B is 12th from the front, so position of B = 12.
There are four people between A and B, so A is 12 + 5 = 17 from the front initially.
Set N - 21 = 17 ⇒ N = 38 (total people).
Three people ahead of A leave the queue, so A's new position from the front is 17 - 3 = 14.
Answer: 14