The ratio of boys to girls in a school is 5: 4. If the
number of boys are 540, find the number of girls
To find the number of girls, we need to use the given ratio and the number of boys.
The ratio of boys to girls is given as 5:4, which means for every 5 boys, there are 4 girls.
Given that the number of boys is 540, we can set up a proportion to solve for the number of girls.
5 boys / 4 girls = 540 boys / x girls
Cross-multiplying, we get:
5 * x girls = 4 * 540 boys
5x = 2160
To solve for x, we divide both sides of the equation by 5:
x = 2160 / 5
x = 432
Therefore, the number of girls in the school is 432.
5:4 = 540:432
5 : 4 = 540 : 432
Explanation:
540 divided by 5 is equal to 108
432 divided by 4 is equal to 108
108 𝚡 5 = 540
108 𝚡 4 = 432