A) \[A\to s;\,B\to q;\,C\to r;\,D\to p\]
B) \[A\to r;\,B\to s;\,C\to p;\,D\to q\]
C) \[A\to p;\,B\to s;\,C\to q;\,D\to r\]
D) \[A\to p;\,B\to q;\,C\to s;\,D\to r\]
Correct Answer: B
Solution :
A: \[\frac{1}{4}x+18=20\] \[\frac{1}{4}x=2\] \[x=8\] B: \[\frac{2}{3}\,x+4=7\] \[\frac{2}{3}x=3\] \[x=\frac{9}{2}\] C: \[\frac{2}{5}x+5x=4\] \[\frac{2x+25x}{5}+4\] \[\frac{27x}{5}=4\] \[x=\frac{20}{27}\] D: \[6x+4=34\] \[6x=34-4\] \[6x=30\] \[x=\frac{30}{6}\] \[x=5\]
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