Question

At a birthday party there were five more girls than boys. If the ratio of girls to boys was 4 to 3,

how many girls were at the party? (Make a chart to help you.)

Answer 1

Let number if boys be x

• No of girls=x+5

ATQ

`\\ \sf\longmapsto (x+5)/(x)=(4)/(3)`

`\\ \sf\longmapsto 3(x+5)=4x`

`\\ \sf\longmapsto 3x+15=4x`

`\\ \sf\longmapsto 4x-3x=15`

`\\ \sf\longmapsto x=15`

Number of girls

`\\ \sf\longmapsto x+5=15+5=20`