Question

you are planning a party for 12 people and you purchase 4 bags of candy.If you have a party for 21 people,how many bags of candy should you purchase

Answer 1

7

Explanation:

Apply proportions:

People/bag of candy

`(12)/(4)`

For 21 people

`(21)/(x)`

Equal both expressions

`(12)/(4) =(21)/(x)`

Solve for x:

`x=21(12)/(4) \\x= (21)/(3) \\x=7`

You should purchase 7 bags of candy

Answer 2

7

Explanation:

one bag of candy for every three people

12 ÷ 4 = 3

21 ÷ 7 = 3