The ratio of boys to girls in class is 4:5. If there are 20 girls, how many boys were there?
Answer (1)
Answer: There are 16 boys in the class.Step-by-step explanation:A ratio shows how many times one number contains another.The ratio of boys to girls is 4:5. That means for every 4 boys, there are 5 girls.We are told there are 20 girls.Since the girls’ part of the ratio is 5, let’s see how many times bigger 20 is than 5: 20 ÷ 5 = 4So, each part in the ratio is worth 4 students.The boys’ part of the ratio is 4.Multiply by the same value (4): 4 × 4 = 16To check if you got it right, the product of both means and extremes must be equal.Means = 5×16 = 80 Extremes = 4×20 = 80 /below is a visual solution to help you understand easier/
