Given
Number of bags the family bought = 6 bags
Each bag has 14 cookies
They had eaten 29 of the cookies
The total number of cookies available in the 6 bags can be found using the formula below:
[tex]Total\text{ number of cookies = Number of bags }\times\text{ cookies per bag}[/tex]Substituting the given values:
[tex]\begin{gathered} Total\text{ number of cookies = 6 }\times\text{ 14} \\ =\text{ 84 cookies} \end{gathered}[/tex]Let the number of cookies they have left be x
The number of cookies left is the difference between the total number of cookies and the number they have eaten
[tex]x\text{ = Total number of cookies - Number of cookies eaten}[/tex]Substituting we have:
[tex]\begin{gathered} x\text{ = 84 - 29} \\ =\text{ 55 cookies} \end{gathered}[/tex]Hence, they have 55 cookies left