7th Class Mathematics Comparing Quantities Question Bank Comparing Quantities

  • question_answer
    Which of the following statements is CORRECT?
    Statement 1: Mathematics textbook for Class VII has 320 pages. The chapter 'Symmetry' runs from page 261 to page 272. The ratio of the number of pages of this chapter to the total number of pages of the book is \[3:81\]
    Statement 2: In a school of 100 students, only 2 out of 5 students can participate in a quiz. The percentage of students that participate in the quiz is 40%.

    A)  Only Statement-1

    B)  Only Statement-2

    C)  Both Statement-1 and Statement-2

    D)  Neither Statement-1 nor Statement-2

    Correct Answer: B

    Solution :

    Statement 1: Total number of pages = 320 Number of pages in chapter 'Symmetry' \[=272-261+1=12\] So, required ratio \[=12:320=3:80\] Statement 2: Ratio of students participate in the quiz =2:5 So, number of students participate in the quiz \[=\frac{2}{5}\times 100=40\] \[\therefore \] Percentage of students that participate in the quiz \[=\frac{40}{100}\times 100=40%\]


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