In a class of 45 students, a boy is ranked 20th. When two boys joined, his rank was dropped by one. What is hi

Question

In a class of 45 students, a boy is ranked 20th. When two boys joined, his rank was dropped by one. What is his new rank from the end?

Accepted Answer

Here's a brief explanation:

1.  Initial total students = 45.
2.  Boy's initial rank from top = 20th.
3.  His initial rank from the end = (Total students - Rank from top) + 1 = (45 - 20) + 1 = 25 + 1 = 26th.

4.  When two boys joined, new total students = 45 + 2 = 47.
5.  His rank was "dropped by one". This means his numerical rank increased by one (he moved further down the list). So, his new rank from the top = 20 + 1 = 21st.

6.  His new rank from the end = (New total students - New rank from top) + 1 = (47 - 21) + 1 = 26 + 1 = 27th.

Therefore, his new rank from the end is 27th.

Analyzing the options:
A) 25th: Incorrect. This would imply a different calculation of total students or rank.
B) 26th: Incorrect. This was his original rank from the end.
C) 27th: Correct. Matches our calculation.
D) 28th: Incorrect. This would imply his rank from the top was 20th and total students 47, or his rank from the top was 22nd with 47 students.

Answer

25th

Answer

26th

Answer

27th

Answer

28th

In a class of 45 students, a boy is ranked 20th. When two boys joined, his rank was dropped by one. What is his new rank from the end?

Explanation

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