Question

the ratio of boys to girl in a groupis 5:3 there are 80 more boys than girls. work out how many girls are there?

Answer 1

Answer:

there are 120 girls in total

Step-by-step explanation:

if there are 80 more boys than girls then 2x =. 80

Answer 2

Answer :

⟹ Girls = 180

Explanation :

Given :

➤ Boys and Girls = 5 : 3 = 5 / 3

➤ Boys = 80 + Girls

According to the question :

Let the no. of. Girls and Boys be ' x '

• Boys = 5x
• Girls = 3x
• Boys = 80 + 3x

Equation :

⇛5 / 3 = 80 + 3x / x

⋆ ( cross multiply ✖ )

⇛5 × x = 3 × ( 80 + 3x )

⇛5x = 240 + 9x

⇛9x - 5x = 240

⇛4x = 240

⇛x = 240 / 4

⇛x = 60

To find :

⟹ Boys = 5x = 5 × 60 = 300

⟹ Girls = 3x = 3 × 60 = 180

So, It's Done !!