$$\frac{{20 + 8 \times 0.5}}{{20 - ?}}{\text{ = 12}}$$ Find the value in place of (?)
A. 2
B. 8
C. 18
D. None of these
Answer: Option C
Solution(By Examveda Team)
Let the missing number is x$$\eqalign{ & {\text{Given,}} \cr & \frac{{20 + 8 \times 0.5}}{{20 - x}}{\text{ = 12}} \cr & \Rightarrow \frac{{20 + 4}}{{20 - x}} = 12 \cr & \Rightarrow \frac{{24}}{{20 - x}} = 12 \cr & \Rightarrow 20 - x = \frac{{24}}{{12}} = 2 \cr & \Rightarrow x = 20 - 2 \cr & \,\,\,\,\,\,\,\,\,\,\,\, = 18 \cr & {\text{Hence, the number is 18}} \cr} $$
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