A) 100
B) 80
C) 49
D) 70
Correct Answer: D
Solution :
Let the number of boys be x. Then, the number of girls \[=14\frac{2}{7}%\] of x \[=\frac{100}{7}x\times \frac{1}{100}=\frac{x}{7}\] Now, total number of students = 560 So, \[x+\frac{x}{7}=560\Rightarrow \frac{8x}{7}=560\Rightarrow x=490\] \[\therefore \] Number of girls \[=(560-490)=70\]You need to login to perform this action.
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