Subject

    Quantitative Aptitude

    Topic

    Exponent & Logarithm

    If 4a+ 4a+1= 4(a+2)- 176, what is the value of a?

    ক)
    2
    খ)
    4
    গ)
    6
    ঘ)
    8

    Explanation

    4 a + 4 a+1 = 4 (a+2) - 176 or, 4 a +4 a+1 -4 a+2 = -176 or, 4 a +4 a .4 1 -4 a .4 2 = -176 or, 4 a ×(1+4-16)=-176 or, 4 a ×(-11)=-11×16 or, 4 a =4 2 So, a=2

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