IBPS PO Prelims 23 Aug 2025 Shift 3 Solved Paper

Concept:Compare the combined total students of two year-pairs using percentage difference.Explanation:Use $Girls = 2 \times Average - Boys$ to find the number of girls for each required year.For 2001: $Girls = 2 \times 140 - 160 = 120$Total students in 2001 $= 160 + 120 = 280$For 2002: $Girls = 2 \times 160 - 200 = 120$Total students in 2002 $= 200 + 120 = 320$For 2004: $Girls = 2 \times 180 - 120 = 240$Total students in 2004 $= 120 + 240 = 360$For 2005: $Girls = 2 \times 150 - 200 = 100$Total students in 2005 $= 200 + 100 = 300$Total students of 2001 and 2004 together $= 280 + 360 = 640$Total students of 2002 and 2005 together $= 320 + 300 = 620$Difference $= 640 - 620 = 20$Required percentage $= \frac{20}{620} \times 100 \approx 3.23\%$ moreAnswer:$3\%$ more (Option C).