The pie charts show placement percentages of graduates of five different subjects out of the total campus placements for two consecutive years (2023 and 2024).

In the year 2024, the number of Maths students who got placed was double that of the previous year. Which of the following is closest to the percentage change in the number of Life Sciences students placed in 2024?

Correct option is B

Solution:
From the pie charts:
2023 percentages
• Maths = 7%
• Life Sciences = 44%
2024 percentages
• Maths = 9%
• Life Sciences = 43%

Step 1: Find total placements ratio (2024 : 2023)
Given:
Maths placements in 2024 = double of 2023
Let total placements in 2023 = 100
Maths placements in 2023 = 7
Maths placements in 2024 = 14
But Maths is 9% in 2024, so total placements in 2024 =
14 ÷ 0.09 ≈ 155.56
So,
Total placements ratio ≈ 156 : 100

Step 2: Calculate Life Sciences placements
2023 Life Sciences
= 44% of 100
= 44
2024 Life Sciences
= 43% of 156
≈ 67.1
Step 3: Percentage change
Increase = 67.1 − 44 = 23.1
Percentage increase = (23.1 / 44) × 100
≈ 52.5%
Closest option = 50% increase
Correct answer:
(b) increased by 50%