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Question 19
The ratio of the number of girls to the number of boys in a town is 90%. If the total number of boys and girls in the town is 190, how many girls are in the town?
Solution
Let no. of girls in the town be 'x'.
Let no. of boys in the town be 'y'.
According to question,
$$\frac{x}{y}=0.9$$.
$$x+y=190$$.
Solving above 2 equations,
We get,$$ x=90, y=100$$.
Therefore no. of girls in the town=90.
Hence, Option C is correct.
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