A) \[1:2\]
B) \[2:3\]
C) \[3:4\]
D) \[3:5\]
Correct Answer: B
Solution :
Let the number of boys be x and number of girls be y in a class. Then \[16.8=\frac{17.4x+16.4y}{x+y}\] \[16.8x+16.8y=17.4x+16.4y\] \[0.4y=0.6x\] \[\frac{x}{y}=\frac{2}{3}\]therefore required ratio \[x:y\,\,=\,\,2:3\]You need to login to perform this action.
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