SSC CGL 2021 PYQ — Question 87

SSC CGL - 13 Aug 2021 - Shift 1 • Reasoning • Q87

Out of the total number of players, 100/3 % are in hotel X and the remaining are in hotel Y. If 20 players from hotel Y are shifted to hotel X, then the number of players in hotel X becomes 50% of the total number of players. If 20 players from hotel X are shifted to hotel Y, then the number of players in hotel X becomes what percent of the total number of players?

Show answer & explanation

Correct answer: A

Explanation

The correct answer is Option 1 i.e. 16.67%.

Understanding

The logic used here is:

Let total players = x

Players in hotel X = 100 / 3 % of x = x / 3

Players in hotel Y = x - x / 3 = 2x / 3

According to the question;

x / 3 + 20 = 50 / 100 × x

x = 120

Now, 

Players in hotel X = 120 / 3 = 40

Players in hotel Y = 240 / 3 = 80

If 20 players from hotel X are shifted to hotel Y, then the number of players in hotel X= 40 - 20 = 20

The number of players in hotel X becomes what percent of the total number of players = 20 / 120 × 100 = 16.67%

Hence, Option 1 is the correct answer.