Ratio: Miscellaneous Exercises on Ratio and its Properties

The video tutorial explains how to find the number of girls in a school given the ratio of girls to boys and the actual number of boys. The ratio is 3:4, and the number of boys is 140. By multiplying the ratio of girls (3) by the number of boys (140) and dividing by the ratio of boys (4), the number of girls is calculated to be 105. The tutorial also generalizes this method for finding unknown quantities when given a ratio and one real value.

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