Armed Forces Classification Test (AFCT) Arithmetic Reasoning Practice Test

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The ratio of girls to boys born at a hospital is 2:5. If there were 35 births one day, how many babies born were girls?

The correct answer is: 10

To determine how many girls were born based on the given ratio of girls to boys, we start with understanding the ratio itself. The ratio of girls to boys is 2:5, which means for every 2 girls, there are 5 boys. The total parts of the ratio can be added together: 2 (girls) + 5 (boys) = 7 (total parts). Next, we need to figure out how many of these parts correspond to the total number of births, which is given as 35. To find the value of each part, we take the total number of births and divide it by the total parts in the ratio: 35 births ÷ 7 parts = 5 births per part. Since girls constitute 2 parts of the ratio, we can now calculate the number of girls: 2 parts × 5 births per part = 10 girls. Thus, from the total of 35 births, 10 were girls. This shows how the ratio directly relates to the total number of births, allowing us to find the number of girls born.