Nutrition. Following the guidelines of the U.S. Department of Agriculture, Dale tries to eat at least 5 half-cup servings of vegetables each day. For the first six days of one week, she had 4, 6, 7, 4, 6, and 4 servings. How many servings of vegetables should Dale eat on Saturday, in order to average at least 5 servings per day?

Solution:

We assume X servings of vegetables should Dale eat on Sunday

4+6+7+4+6+4+X = 7*5

X=4

so 4 servings of vegetables should Dale eat on Sunday in order to average at least 5 servings per day