Question

1. there are 18 boys and 12 girls in a science club. what is the ratio of boys to the total number of students in the club? 18:30 18:12 12:18 6:12

Explanation:

Step1: Calculate total students

Total students = Boys + Girls = $18 + 12 = 30$

Step2: Find boys-to-total ratio

Ratio = $\frac{\text{Boys}}{\text{Total students}} = \frac{18}{30}$

Step3: Simplify the ratio

Divide numerator and denominator by 6: $\frac{18\div6}{30\div6} = \frac{3}{5}$ or $3:5$ (matches 18:30 unsimplified)

Answer:

18:30