Practice Test Discussion

Q)

A number is tripled and added 3, if the resultant is doubled, it becomes 30. What is the number?

    • Explanation

    Let the number is 'x'

    According to the question

    The number is tripled= 3x

    Then, added 3= (3x+3)

    Resultant is doubled = 2(3x+3)

    Given, 30

    ⇒ 2(3x+3)=30

    ⇒ 6x+6=30

    ⇒ 6x=24

    ⇒ x=4

    ∴ The number is '4'

    Hence, Option C is correct.

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