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If the mean of x3x-3, x+4x+4, 2x12x-1, x+3x+3 is 2. The value of x is :

Solution

Correct Option: 4

Sum = (x3)+(x+4)+(2x1)+(x+3)=5x+3(x-3) + (x+4) + (2x-1) + (x+3) = 5x + 3. Mean = 5x+34=2\frac{5x+3}{4} = 2, so 5x+3=85x + 3 = 8, giving 5x=55x = 5 and x=1x = 1, which matches option 4.

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