Question

The ratio of boys to girls in a group is 5 : 3

There are 80 more boys than girls.

Work out how many girls are there?​

Answer 1

Let number of boys be 5x and girls be 3x

According to question

5x=3x+80

5x-3x=80

2x=80

x=40

Number of girls= 3x=3*40=120

Hence, number of girls is 120.

Pls mark as brainliest

Answer 2

Given - Ratio of boys to girls = 5:3

80 more boys than girls

Find - Number of girls

Solution - Let the number of boys and girls be 5x and 3x.

So, as per comparison of number of boys and girls, mathematical expression that will form will be -

5x = 3x + 80

Now, solving to get value of x.

5x - 3x = 80

2x = 80

x = 40

Now, number of boys = 5x

Number of boys = 5*40

Number of boys = 200

Number of girls = 3x

Number of girls = 3*40

Number of girls = 120

Hence, number of girls is 120.