Answer; 20 weeks
Explanation;
Given,5 cases containing 6 cartons
=boxes in each carton= 12 x 6= 72
= 72 boxes of sauce in each case
= sauces in all 5 cases= 72 x 5= 360
Therefore narrator uses 18 boxes of sauce each week
To find how many weeks it will last we divide 360 with 18 as 18 sauce boxes are used every week and total sauces are 360=
18/360= 20
Narrator uses the sauce boxes for 20 weeks.
Hope it helps you.
