We get the following equation by observing the given table.
[tex]\text{2 times number of pacakages=Number of favours.}[/tex]
Molly needs 24 favours.
Substitute number of favours=24, we get
[tex]\text{2 times number of pacakages=2}4[/tex]
[tex]\text{2 }\times\text{ number of pacakages=2}4[/tex]
Dividing by 2 into both sides, we get
[tex]\frac{\text{2 }\times\text{ number of pacakages}}{2}\text{=}\frac{24}{2}[/tex]
[tex]\text{number of pacakages}=12[/tex]
Hence molly needs to buy 12 packages to have 24 favours.
