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

Answer:

7

Step-by-step explanation:

one bag of candy for every three people

12 ÷ 4 = 3

21 ÷ 7 = 3

Answer 2

Answer:

7  

Step-by-step explanation:

Apply proportions:

People/bag of candy

$\frac{12}{4}$

For 21 people

$\frac{21}{x}$

Equal both expressions

$\frac{12}{4} =\frac{21}{x}$

Solve for x:

$x=21\frac{12}{4} \\x= \frac{21}{3} \\x=7$

You should purchase 7 bags of candy