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What is the percentage increase or decrease in the number of seats won by A, B, C and D in the general elections of 2009 as compared to the results of 2004? - Mathematics

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Sum

What is the percentage increase or decrease in the number of seats won by A, B, C and D in the general elections of 2009 as compared to the results of 2004?

Political party Number of seats won
in 2004
Number of seats won
in 2009
A 206 145
B 116 138
C 4 24
D 11 12
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Solution

For Political party A,

Number of seats won in 2004 = 206

Number of seats won in 2009 = 145

Decrement in the number of seats won by party A = 206 – 145 = 61

∴ Decrease % = `61/206 xx 100` = 29.61%

For Political party B,

Number of seats won in 2004 = 116

Number of seats won in 2009 = 138

Decrement in the number of seats won by party B = 138 – 116 = 22

∴ Increase % = `22/116 xx 100` = 18.96%

For Political party C,

Number of seats won in 2004 = 4

Number of seats won in 2009 = 24

Decrement in the number of seats won by party C = 24 – 4 = 20

∴ Increase % = `20/4 xx 100` = 500%

For Political party D,

Number of seats won in 2004 = 11

Number of seats won in 2009 = 12

Decrement in the number of seats won by party D = 12 – 11 = 1

∴ Increase % = `1/11 xx 100` = 9.09%

Concept: Increase Or Decrease as Percent
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APPEARS IN

NCERT Mathematics Exemplar Class 8
Chapter 9 Comparing Quantities
Exercise | Q 94 | Page 297
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