Jane and her friends were selling cookies. They sold 4 more boxes the second week than they did the first. On the third week, they doubled the sale of their second week. Altogether, they sold a total of 352 boxes. How many boxes did they sell in the third week? Show your work.

Step-by-step explanation:

let the number of cookies sold on first week be=x

let the number of cookies sold on second week be= x+4

let the number of cookies sold on third week be= (x+4)×2

total number of cookies sold = 351

now 351=(x)+(x+4)+(x+4)×2

351=3x+(4+4×2)

351=3x+12

3x=351-12

3x=339

x=339÷3

x=11

Cookies sold on first week=113

Cookies sold on second week= 113+4= 117

Cookies sold on third week =113+4×2 = 113+8=121

now add all the number of cookies solved for confirmation
=113+ 117+ 121= 351

In the third week, they sold in total 178 cookies.