Final answer:
Adults can stretch meager meals by adding inexpensive ingredients, using leftovers creatively, and incorporating affordable yet nutritious foods.
Step-by-step explanation:
When adults need to stretch meager meals, there are several strategies they can use. One common technique is to add inexpensive ingredients such as rice, beans, or potatoes to bulk up the meal and make it more filling. Another option is to use leftovers creatively, for example, by turning them into a soup or casserole. Lastly, adults can also incorporate more affordable yet nutritious foods like vegetables and legumes into their meals.