Subject

    Quantitative Aptitude

    Topic

    Percentage

    What should come in place of the question mark (?) in the following question? ?% of 280 + 18% of (2200 ÷ 4) = 143.8

    ক)
    11
    খ)
    18
    গ)
    21
    ঘ)
    16
    ঙ)
    None of these

    Explanation

    Follow BODMAS rule to solve this question, as per the order given below, Step-1- Parts of an equation enclosed in 'Brackets' must be solved first, and in the bracket, the BODMAS rule must be followed, Step-2- Any mathematical 'Of' or 'Exponent' must be solved next, Step-3-Next, the parts of the equation that contain 'Division' and 'Multiplication' are calculated, Step-4-Last but not least, the parts of the equation that contain 'Addition' and 'Subtraction' should be calculated. Given expression is, ⇒ ?% of 280 + 18% of (2200 ÷ 4) = 143.8 ⇒ ?% of 280 + 18% of 550 = 143.8 ⇒ ?% of 280 + 99 = 143.8 ⇒ ?% of 280 = 44.8 ⇒ (?/100) × 280 = 44.8 ⇒ (?/100) = 44.8/280 ⇒ (?/100) = 0.16 ⇒ ? = 16 Hence required answer is 16.

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