Question

In a given school, there are 240 boys and 260 girls.

Answer 1

Hello!

Part A

To get the ratio of girls to boys you do

amount of girls: amount of boys

The answer is 260: 240
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First you have to find the total amount of students

240 + 260 = 500

To get the ratio of boys to the total amount of students you do 

amount of boys: amount of students

The answer is 240:500

Hope this helps!

Answer 2

$a)\\\\\dfrac{260}{240}=\dfrac{26}{24}=\dfrac{13}{12}=13:12\\\\b)\\240+260=500\\\\\dfrac{240}{500}=\dfrac{24}{50}=\dfrac{12}{25}=12:25$