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2.4 question number 1

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2.4 question number 1

    • Posted by Aido Tali 5 years, 2 months ago

    CBSE > Class 08 > Mathematics
    • 4 answers

    Saanvi Jamwal 5 years, 1 month ago

    4

    0Thank You

    Naga Anjana 5 years, 2 months ago

    Sol= Take, X-5/2 Then multiply the product by 8 (x-5/2)8 Let the result be 3x then, (x-5/2)8 =3x 8x-5/2*8=3x 8x-40/2=3x 8x -3x=40/2 5x=20 X =20/5 X=4 Therefore the number is 4.

    0Thank You

    Zainab Fatima 5 years, 2 months ago

    Amina thinks of a number and subtracts 5/2 from it. She multiplies the result by 8. The result now obtained is 3 times the same number she thought of. What is the number? Solution: Let the number be x, According to the question, (x – 5/2) × 8 = 3x ⇒ 8x – 40/2 = 3x ⇒ 8x – 3x = 40/2 ⇒ 5x = 20 ⇒ x = 4 Thus, the number is 4.

    0Thank You

    Gaurav Seth 5 years, 2 months ago

    1. Amina thinks of a number and subtracts 5/2 from it. She multiplies the result by 8. The result now obtained is 3 times the same number she thought of. What is the number?

    Solution:

    Let the number be x,

    According to the question,

    (x – 5/2) × 8 = 3x

    ⇒ 8x – 40/2 = 3x

    ⇒ 8x – 3x = 40/2

    ⇒ 5x = 20

    ⇒ x = 4

    Thus, the number is 4.

    1Thank You

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