A) 520
B) 580
C) 620
D) 600
Correct Answer: D
Solution :
Let the number of boys be x. \[\therefore \] Number of girls \[=1200-x\] \[\therefore \] \[\frac{x}{1200-x}=\frac{75-70}{80-75}\] or, \[\frac{x}{1200-x}=\frac{5}{5}=\frac{1}{1}\] or, \[x=1200-x\] \[\therefore \] \[2x=1200\] \[\therefore \] \[x=600\]You need to login to perform this action.
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