The chef should order 7 cases of lettuce.
Explanation:
Lettuce is a leafy vegetable enriched with vitamin C, calcium and potassium. Hence it is commonly used in the hospital foodservice facility. Â
The kitchen supervisor decided to order some lettuce cases. On discussing with the chef, he came to know that half a case of lettuce is used per day. They have a stock of two-and-one-half cases of lettuces on the day of order. The lead time of the lettuce is three days. So the chef decided to order seven cases of lettuce.