A) 18
B) 24
C) 36
D) 48
Correct Answer: B
Solution :
In the first row: \[\frac{21}{7}=\frac{27}{9}\] In the second row: \[\frac{36}{4}=\frac{18}{2}\] \[\therefore \] In the third row: \[\frac{54}{9}=\frac{x}{4}\] \[\Rightarrow \] \[x=24\]
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