Question : The pie chart given below shows the number of students studying in six schools. Total number of students studying in all these six schools are 9000. The number of students studying in a particular school is shown as a percentage of the total number of students studying in all these six schools.
What is the difference between the number of students studying in schools A and B together and schools D and F together?
Option 1: 790
Option 2: 810
Option 3: 770
Option 4: 840
Correct Answer: 810
Solution :
Number of students studying in schools A and B together
= (5% + 35%) × 9000
= 40% × 9000
= 3600
Number of students studying in schools D and F together
= (21% + 10%) × 9000
= 31% × 9000
= 2790
Required difference = 3600 – 2790 = 810
Hence, the correct answer is 810.
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