Let boys be x and girls y. The equations are x + y = 10 and y – x = 4. Graphing both lines reveals their unique intersection point at (3, 7). Thus, 3 boys and 7 girls participated. Ganita Manjari ...
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Let boys be x and girls y. The equations are x + y = 10 and y – x = 4. Graphing both lines reveals their unique intersection point at (3, 7). Thus, 3 boys and 7 girls participated. Ganita Manjari ...