There is a school of 1,200 pupils. 3/5 of them are girls.
A. What fractions are boys?
B. How many pupils are girls?
C. How many pupils are boys?
I have no idea how to solve this. If someone could give me a method it would be really helpful
first find how much 1/5 of 1200 is.
1200 divided by 5 = 240. 240*3 ( * means multiply) = 720
720 pupils are girls.
1200 - 720 = 480.
480 pupils are girls.
480 divided by 240 = 2.
2/5 of the pupils are boys.
To solve this problem, you first need to understand the concept of fractions and how they represent parts of a whole.
A. To find the fraction of boys, you need to subtract the fraction of girls from 1. Since 3/5 of the students are girls, the remaining fraction would be boys. So, the fraction of boys is 1 - 3/5 = 2/5.
B. To find the number of girl pupils, you need to multiply the total number of pupils (1,200) by the fraction representing girls (3/5). This can be calculated as 1,200 * 3/5 = 720. Therefore, there are 720 girl pupils.
C. To find the number of boy pupils, you can multiply the total number of pupils (1,200) by the fraction representing boys (2/5). This can be calculated as 1,200 * 2/5 = 480. Hence, there are 480 boy pupils.
In summary:
A. The fraction of boys is 2/5.
B. The number of girl pupils is 720.
C. The number of boy pupils is 480.
5/5 - 3/5 = ______ are boys
(3/5) * 1200 = ______ are girls