A) 14
B) 16
C) 18
D) 19
Correct Answer: A
Solution :
[a] If the number be x, then \[x+21=3x-\,7\] \[\Rightarrow 3x-\,x=21+7\] \[\Rightarrow 2x=28\] \[\Rightarrow x=14\]You need to login to perform this action.
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