A) 10
B) 20
C) 40
D) 73
Correct Answer: C
Solution :
Let the number of students in the class x Then, \[x\times 1+83-63=x\left( 1+\frac{1}{2} \right)\] \[x+20=\frac{3}{2}x\] \[20=\frac{x}{2}\] \[x=40\]You need to login to perform this action.
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