Question

There are sto students in a school. If the number of boys and girls are in the ratio 4:3, find their numbers. ​

Answer 1

Total students are 560.

• Let boys be 4x and girls 3x

`\\ \rm\hookrightarrow 4x+3x=560`

`\\ \rm\hookrightarrow 7x=560`

`\\ \rm\hookrightarrow x=80`

• Boys°320
• Girls=240

Answer 2

number of boys = 320

number of girls = 240

Explanation:

Total students in school = 560

Ratio of boys to girls = 4 : 3

Add the ratios together: 4 + 3 = 7

Divide the total by this number: 560 ÷ 7 = 80

Now multiply the original ratio numbers by 80 to find the numbers of boys and girls:

⇒ number of boys = 4 x 80 = 320

⇒ number of girls = 3 x 80 = 240