1. Cost of a dozen pens (12 pens) = ₹180 ∴ Cost of 1 pen = 180/12=₹15 Cost of 8 ball pens = ₹56 ∴ Cost of 1 ball pen = 56/8 = ₹7 Ratio of cost of one pen to that of one ball pen = 15/7 = 15:7 https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-12/

    Cost of a dozen pens (12 pens) = ₹180
    ∴ Cost of 1 pen = 180/12=₹15
    Cost of 8 ball pens = ₹56
    ∴ Cost of 1 ball pen = 56/8 = ₹7
    Ratio of cost of one pen to that of one ball pen = 15/7 = 15:7

    https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-12/

    See less
    • 4
  2. Total number of students = 1800, Number of students opted basketball = 750 Number of students opted cricket = 800 Therefore, number of students opted tennis = 1800 – (750 + 800) = 250 (a)Ratio of students opted basketball to that of opted table tennis=750/250=3/1=3:1 (b)Ratio of students opted crickRead more

    Total number of students = 1800, Number of students opted basketball = 750
    Number of students opted cricket = 800
    Therefore, number of students opted tennis = 1800 – (750 + 800) = 250
    (a)Ratio of students opted basketball to that of opted table tennis=750/250=3/1=3:1
    (b)Ratio of students opted cricket to students opted basketball= 800/750=16/15=16:15
    (c)Ratio of students opted basketball to total no. of students= 750/1800=5/12=5:12

    https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-12/

    See less
    • 4
  3. Total number of students in school = 4320 Number of girls = 2300 Therefore, number of boys = 4320 – 2300 = 2020 (a) Ratio of girls to total number of students = 2300/4320 = 115/216 = 115:216 (b) Ratio of boys to that of girls = 2020/2300 = 101/115 = 101 : 115 (c) Ratio of boys to total number of stuRead more

    Total number of students in school = 4320
    Number of girls = 2300
    Therefore, number of boys = 4320 – 2300 = 2020

    (a) Ratio of girls to total number of students = 2300/4320 = 115/216 = 115:216
    (b) Ratio of boys to that of girls = 2020/2300 = 101/115 = 101 : 115
    (c) Ratio of boys to total number of students = 2020/4320 = 101/216=101 : 216

    https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-12/

    See less
    • 4
  4. Ratio of number of teachers to that of students = 102/3300 = 17/550 = 17:550 https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-12/

    Ratio of number of teachers to that of students = 102/3300 = 17/550 = 17:550

    https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-12/

    See less
    • 4
  5. Total earning = ₹1,50,000 and Saving = ₹50,000 ∴ Money spent = ₹1,50,000 - ₹50,000 = ₹1,00,000 (a) Ratio of money earned to money saved = 150000/50000 = 3/1 =3:1 (b) Ratio of money saved to money spend = 50000/100000 = 1/2 =1:2 https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-12/

    Total earning = ₹1,50,000 and Saving = ₹50,000
    ∴ Money spent = ₹1,50,000 – ₹50,000 = ₹1,00,000

    (a) Ratio of money earned to money saved = 150000/50000 = 3/1 =3:1
    (b) Ratio of money saved to money spend = 50000/100000 = 1/2 =1:2

    https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-12/

    See less
    • 4