Study the given pie-chart and answer the queistion that follows.
The pie-chart shows the number of students (boys and girls) studying in standard 10 of various schools (X, Y, Z in the year 2022).
What is the difference between the total number of students (boys and girls) in school Y and Z together and the total number of students (boys and girls) in school X and Y together?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 720.
Given that
Total number of students = 3600
The total number of students (boys and girls) in school X = (45/100) × 3600 = 1620
The total number of students (boys and girls) in school Y = (30/100) × 3600 = 1080
The total number of students (boys and girls) in school Z = (25/100)× 3600 = 900
The total number of students (boys and girls) in school Y and Z together = 1080 + 900 = 1980
The total number of students (boys and girls) in school X and Y together = 1620 + 1080 = 2700
Hence, the required difference = 2700 - 1980 = 720