The following pie charts shows the percentage distribution of total students selected in SSC examination and percentage distribution of total boys selected students from six different zones. Study the following pie chart carefully and answer the given questions.

Total number of girls selected from zone A & zone C together is approximately what percent more or less than total number of boys selected from zone A & zone C together?

The correct answer is 68%.

From the given pie charts, we have the following total values:

• Total number of students selected across all six zones = 12,000
• Total number of boys selected across all six zones = 7,000

Step 1: Calculate the total number of students selected from Zone A & Zone C together.

Percentage of total students selected from Zone A = 25%
Percentage of total students selected from Zone C = 15%

Total percentage of students from Zone A & Zone C together:

$25\%+15\%=40\%$

Total number of students from Zone A & Zone C together:

$=40\%\text{of}\mathrm{12,000}$

$=\frac{40}{100}\times \mathrm{12,000}=\mathrm{4,800}$

Step 2: Calculate the total number of boys selected from Zone A & Zone C together.

Percentage of boys selected from Zone A = 30%
Percentage of boys selected from Zone C = 22%

Total percentage of boys from Zone A & Zone C together:

$30\%+22\%=52\%$

Total number of boys from Zone A & Zone C together:

$=52\%\text{of}\mathrm{7,000}$

$=\frac{52}{100}\times \mathrm{7,000}=\mathrm{3,640}$

Step 3: Calculate the total number of girls selected from Zone A & Zone C together.

Number of girls = Total students - Total boys

$\text{Girls from Zone A \& Zone C}=\mathrm{4,800}-\mathrm{3,640}=\mathrm{1,160}$

Step 4: Find how much percent the total number of girls is less than the total number of boys from Zone A & Zone C together.

Difference between boys and girls:

$\mathrm{3,640}-\mathrm{1,160}=\mathrm{2,480}$

Required Percentage Less:

$\text{Percentage Less}=\left(\frac{\text{Difference}}{\text{Total Boys from Zone A \& Zone C}}\right)\times 100$

$=\left(\frac{\mathrm{2,480}}{\mathrm{3,640}}\right)\times 100$

$=\frac{\mathrm{24,800}}{364}\approx 68.13\%$

Rounding to the nearest whole number gives 68%.